Mixtures and Alligation - Pakistan Law Hub

Mixtures and Alligation Competitive Exams

50 questions · Mathematics

Question 1 of 50

How much pure alcohol must be added to 20 L of a 20% alcohol solution to make it 36% alcohol?
Question 2 of 50

How much pure water must be added to 60 L of a 30% solution to reduce it to 20%?
Question 3 of 50

A 56 L mixture has milk and water in the ratio 5 : 3. How much water must be added to make the ratio 1 : 1?
Question 4 of 50

A 30 L mixture contains milk and water in the ratio 4 : 1. How much water must be added to make the ratio 3 : 2?
Question 5 of 50

A vessel has 10 L of pure milk. 1 L is removed and replaced with water, and this is done once more. The quantity of pure milk left is:
Question 6 of 50

A 60 L mixture contains milk and water in the ratio 7 : 5. The quantity of water is:
Question 7 of 50

An alloy of copper and zinc contains them in the ratio 5 : 3. In 24 kg of the alloy, the quantity of zinc is:
Question 8 of 50

A 20 L solution is 40% acid. 4 L of it is removed and replaced with water. The percentage of acid now is:
Question 9 of 50

A 40 L mixture contains milk and water in the ratio 3 : 2. The quantity of milk is:
Question 10 of 50

A milkman buys milk at ₹20/L and mixes water to sell the mixture at ₹20/L. If his gain is 25%, the ratio of water to milk is:
Question 11 of 50

A 30 L mixture has milk and water in the ratio 2 : 3. If 6 L of water is added, the new ratio of milk to water is:
Question 12 of 50

A 45 L mixture has milk and water in the ratio 4 : 5. The quantity of milk is:
Question 13 of 50

A trader mixes 26 kg of rice at ₹20/kg with 30 kg of rice at ₹36/kg and sells the mixture at ₹30/kg. His profit percentage is:
Question 14 of 50

An alloy of zinc and copper in the ratio 9 : 4 weighs 78 kg. How much copper must be added to make the ratio 3 : 2?
Question 15 of 50

A 50 L mixture has milk and water in the ratio 3 : 2. 10 L of the mixture is removed and 10 L of pure milk is added. The new ratio of milk to water is:
Question 16 of 50

5 kg of salt is dissolved in 45 kg of water. The percentage of salt in the solution is:
Question 17 of 50

Equal quantities of two varieties costing ₹12/kg and ₹18/kg are mixed and the mixture is sold at ₹18/kg. The gain percentage is:
Question 18 of 50

A vessel has 125 L of pure milk. One-fifth of the liquid is removed and replaced with water, and this is repeated twice more (three times in all). The pure milk left is:
Question 19 of 50

A vessel has 16 L of pure alcohol. 4 L is removed and replaced with water, and this is done once more. The quantity of alcohol left is:
Question 20 of 50

Two varieties of sugar costing ₹18/kg and ₹24/kg are mixed in the ratio 2 : 1. The cost of the mixture per kg is:
Question 21 of 50

A vessel has 50 L of pure milk. 10 L is removed and replaced with water. The same operation is repeated once more. The quantity of pure milk left is:
Question 22 of 50

A 60 L solution has acid and water in the ratio 2 : 3. How much water must be added to make the ratio of acid to water 1 : 2?
Question 23 of 50

An 80 L mixture has milk and water in the ratio 3 : 1. How much water must be added to make the ratio 3 : 2?
Question 24 of 50

A 40 L vessel contains milk and water in the ratio 3 : 1. 8 L of the mixture is removed and replaced with water. The quantity of milk now is:
Question 25 of 50

In what ratio must tea at ₹60/kg be mixed with tea at ₹80/kg to get a mixture worth ₹74/kg? (cheaper : dearer)
Question 26 of 50

A 40 L solution contains 25% alcohol. How much water must be added to make it 20% alcohol?
Question 27 of 50

How many litres must be drawn from a 60 L vessel of pure milk and replaced with water so that the milk and water become equal?
Question 28 of 50

Two types of tea are mixed in the ratio 2 : 3 to make 15 kg of mixture. The quantity of the first type is:
Question 29 of 50

20 kg of flour at ₹30/kg is mixed with 30 kg of flour at ₹40/kg. The cost of the mixture per kg is:
Question 30 of 50

Milk costing ₹20/L is diluted with water to make a mixture worth ₹16/L. The ratio of milk to water is:
Question 31 of 50

How many kg of sugar must be added to 40 kg of a 10% sugar solution to make it 20% sugar?
Question 32 of 50

A container holds 40 L of pure milk. 4 L is removed and replaced with water. The quantity of milk now is:
Question 33 of 50

20 L of pure water is added to 80 L of a 25% acid solution. The percentage of acid in the new solution is:
Question 34 of 50

In what ratio must milk with 5% fat be mixed with milk with 15% fat to get milk with 8% fat? (5% : 15%)
Question 35 of 50

In what ratio should pulses costing ₹15/kg and ₹20/kg be mixed so that selling the mixture at ₹21/kg gives a 20% profit?
Question 36 of 50

10 L of 40% sugar solution is mixed with 30 L of 20% sugar solution. The percentage of sugar in the mixture is:
Question 37 of 50

A 50 L solution contains 20% acid. The quantity of acid is:
Question 38 of 50

A 40 L solution contains 30% salt. If 10 L of water evaporates, the percentage of salt becomes:
Question 39 of 50

How many kg of tea at ₹72/kg must be mixed with 20 kg of tea at ₹65/kg to get a mixture worth ₹68/kg?
Question 40 of 50

Equal quantities of milk-water mixtures are taken from two vessels. In the first the ratio of milk to water is 2 : 1 and in the second it is 1 : 2. The ratio of milk to water in the new mixture is:
Question 41 of 50

20 kg of salt at ₹9/kg is mixed with 30 kg of salt at ₹14/kg. The cost of the mixture per kg is:
Question 42 of 50

A milkman adds 1 L of water to every 4 L of milk and sells the mixture at the price of pure milk. His profit percentage is:
Question 43 of 50

How many kg of rice at ₹45/kg must be mixed with 10 kg of rice at ₹30/kg to get a mixture worth ₹35/kg?
Question 44 of 50

10 L of pure milk is mixed with 2.5 L of water. The ratio of milk to water in the mixture is:
Question 45 of 50

In what ratio must wheat at ₹9.30/kg be mixed with wheat at ₹10.80/kg to get a mixture worth ₹10/kg? (cheaper : dearer)
Question 46 of 50

From a 60 L vessel of pure milk, 12 L is removed and replaced with water. The ratio of milk to water in the new mixture is:
Question 47 of 50

In what ratio must rice at ₹40/kg be mixed with rice at ₹50/kg to get a mixture worth ₹44/kg? (cheaper : dearer)
Question 48 of 50

10 L of milk-water mixture in the ratio 3 : 2 is mixed with 10 L of mixture in the ratio 4 : 1. The ratio of milk to water in the final mixture is:
Question 49 of 50

In what ratio must a 30% solution be mixed with a 50% solution to get a 42% solution? (30% : 50%)
Question 50 of 50

15 L of a 20% solution is mixed with 25 L of a 40% solution. The percentage in the mixture is:

Question 1 / 50

0 / 50 answered · 0 skipped

How much pure alcohol must be added to 20 L of a 20% alcohol solution to make it 36% alcohol?

How much pure water must be added to 60 L of a 30% solution to reduce it to 20%?

A 56 L mixture has milk and water in the ratio 5 : 3. How much water must be added to make the ratio 1 : 1?

A 30 L mixture contains milk and water in the ratio 4 : 1. How much water must be added to make the ratio 3 : 2?

A vessel has 10 L of pure milk. 1 L is removed and replaced with water, and this is done once more. The quantity of pure milk left is:

A 60 L mixture contains milk and water in the ratio 7 : 5. The quantity of water is:

An alloy of copper and zinc contains them in the ratio 5 : 3. In 24 kg of the alloy, the quantity of zinc is:

A 20 L solution is 40% acid. 4 L of it is removed and replaced with water. The percentage of acid now is:

A 40 L mixture contains milk and water in the ratio 3 : 2. The quantity of milk is:

A milkman buys milk at ₹20/L and mixes water to sell the mixture at ₹20/L. If his gain is 25%, the ratio of water to milk is:

A 30 L mixture has milk and water in the ratio 2 : 3. If 6 L of water is added, the new ratio of milk to water is:

A 45 L mixture has milk and water in the ratio 4 : 5. The quantity of milk is:

A trader mixes 26 kg of rice at ₹20/kg with 30 kg of rice at ₹36/kg and sells the mixture at ₹30/kg. His profit percentage is:

An alloy of zinc and copper in the ratio 9 : 4 weighs 78 kg. How much copper must be added to make the ratio 3 : 2?

A 50 L mixture has milk and water in the ratio 3 : 2. 10 L of the mixture is removed and 10 L of pure milk is added. The new ratio of milk to water is:

5 kg of salt is dissolved in 45 kg of water. The percentage of salt in the solution is:

Equal quantities of two varieties costing ₹12/kg and ₹18/kg are mixed and the mixture is sold at ₹18/kg. The gain percentage is:

A vessel has 125 L of pure milk. One-fifth of the liquid is removed and replaced with water, and this is repeated twice more (three times in all). The pure milk left is:

A vessel has 16 L of pure alcohol. 4 L is removed and replaced with water, and this is done once more. The quantity of alcohol left is:

Two varieties of sugar costing ₹18/kg and ₹24/kg are mixed in the ratio 2 : 1. The cost of the mixture per kg is:

A vessel has 50 L of pure milk. 10 L is removed and replaced with water. The same operation is repeated once more. The quantity of pure milk left is:

A 60 L solution has acid and water in the ratio 2 : 3. How much water must be added to make the ratio of acid to water 1 : 2?

An 80 L mixture has milk and water in the ratio 3 : 1. How much water must be added to make the ratio 3 : 2?

A 40 L vessel contains milk and water in the ratio 3 : 1. 8 L of the mixture is removed and replaced with water. The quantity of milk now is:

In what ratio must tea at ₹60/kg be mixed with tea at ₹80/kg to get a mixture worth ₹74/kg? (cheaper : dearer)

A 40 L solution contains 25% alcohol. How much water must be added to make it 20% alcohol?

How many litres must be drawn from a 60 L vessel of pure milk and replaced with water so that the milk and water become equal?

Two types of tea are mixed in the ratio 2 : 3 to make 15 kg of mixture. The quantity of the first type is:

20 kg of flour at ₹30/kg is mixed with 30 kg of flour at ₹40/kg. The cost of the mixture per kg is:

Milk costing ₹20/L is diluted with water to make a mixture worth ₹16/L. The ratio of milk to water is:

How many kg of sugar must be added to 40 kg of a 10% sugar solution to make it 20% sugar?

A container holds 40 L of pure milk. 4 L is removed and replaced with water. The quantity of milk now is:

20 L of pure water is added to 80 L of a 25% acid solution. The percentage of acid in the new solution is:

In what ratio must milk with 5% fat be mixed with milk with 15% fat to get milk with 8% fat? (5% : 15%)

In what ratio should pulses costing ₹15/kg and ₹20/kg be mixed so that selling the mixture at ₹21/kg gives a 20% profit?

10 L of 40% sugar solution is mixed with 30 L of 20% sugar solution. The percentage of sugar in the mixture is:

A 50 L solution contains 20% acid. The quantity of acid is:

A 40 L solution contains 30% salt. If 10 L of water evaporates, the percentage of salt becomes:

How many kg of tea at ₹72/kg must be mixed with 20 kg of tea at ₹65/kg to get a mixture worth ₹68/kg?

Equal quantities of milk-water mixtures are taken from two vessels. In the first the ratio of milk to water is 2 : 1 and in the second it is 1 : 2. The ratio of milk to water in the new mixture is:

20 kg of salt at ₹9/kg is mixed with 30 kg of salt at ₹14/kg. The cost of the mixture per kg is:

A milkman adds 1 L of water to every 4 L of milk and sells the mixture at the price of pure milk. His profit percentage is:

How many kg of rice at ₹45/kg must be mixed with 10 kg of rice at ₹30/kg to get a mixture worth ₹35/kg?

10 L of pure milk is mixed with 2.5 L of water. The ratio of milk to water in the mixture is:

In what ratio must wheat at ₹9.30/kg be mixed with wheat at ₹10.80/kg to get a mixture worth ₹10/kg? (cheaper : dearer)

From a 60 L vessel of pure milk, 12 L is removed and replaced with water. The ratio of milk to water in the new mixture is:

In what ratio must rice at ₹40/kg be mixed with rice at ₹50/kg to get a mixture worth ₹44/kg? (cheaper : dearer)

10 L of milk-water mixture in the ratio 3 : 2 is mixed with 10 L of mixture in the ratio 4 : 1. The ratio of milk to water in the final mixture is:

In what ratio must a 30% solution be mixed with a 50% solution to get a 42% solution? (30% : 50%)

15 L of a 20% solution is mixed with 25 L of a 40% solution. The percentage in the mixture is: