1 180 kg of mixture of milk and water contains 5% water.How much more water should be added to it that water may be 10% in the mixture? A) 10 kg B) 15 kg C) 20 kg D) 12 kg
2 A pot contains 81 litres of pure milk.$\frac{1}{3}$ of milk is replaced by the same amount of water.Again $\frac{1}{3}$ of the mixture is replaced by the same amount of water.Find the ratio of milk to water in the new mixture? A) 5 : 4 B) 4 : 5 C) 2 : 3 D) 3 : 2
3 Two equal glasses fillde with mixture of milk and water in the proportion of 2 : 1 and 1 : 1 respectively are emptied into a third glass.What is the proportion of milk and water in the third? A) 3 : 7 B) 5 : 7 C) 4 :7 D) 7 : 5
4 A mixture contains alcohol and water in the ratio 4 : 3.If 5 litres of water is added to the mixture, the ratio becomes 4 : 5.The quality of alcohol in the given mixture is A) 10 litres B) 12 litres C) 11 litres D) 15 litres
5 A painter mixes blue paint with white paint so that the mixture contains 10% blue paint.In a mixture of 40 litres paint, how many litres of blue paintshould be added, so that the mixture contains 20% of blue paint? A) 2.5 litres B) 4 litres C) 5 litres D) 2 litres
6 Two litres of a mixture of spirit and water contains 12% water.This is added to 3 litres of another mixture of spirit and water containing 5% of water.Find the percentage ofwater in the resulting mixture. A) $7\frac{2}{5}%$ B) $7\frac{3}{5}%$ C) $7\frac{4}{5}%$ D) $7%$
7 Zinc and copper are in the ratio of 5 : 3 in 200 gm of an alloy.How much grams of copper be added to make the ratio as 3 : 5? A) $133\frac{1}{3}$ B) $\frac{1}{200}$ C) $72$ D) $66$
8 To a 50 litre mixture containing water and milk in the ratio 2 : 3.30 litre of milk is added.What is the ratio of milk : water in the resultant solution? A) 3 : 1 B) 2 : 1 C) 1 : 3 D) 1 : 2
9 From a 100 litres mixture containing water and milk in equal proportion, 10 litres of mixture is replaced by 10 litres of water in succession, twice.At the end, what is the ratio of milk and water? A) 81 : 119 B) 9 : 11 C) 40 : 60 D) 41 : 59
10 A 10 litres solution of water and salt contains 150 gm salt.If 25% of solution gets evaporated what % of salt would the remaining solution have? A) 1.5% B) 2% C) 1.75% D) 2.5%
11 A and B are two alloys of gold and copper prepared by mixing metals in proportion of 5 : 3 and 5 : 11 respectively.If equal quantities of these alloys are melted to form a third alloy C, what would be the proportion of gold and copper in the alloy C, thus formed? A) 25 : 33 B) 33 : 25 C) 15 : 17 D) 17 : 15
12 In what ratio must rice at Rs.9.30 per kg be mixed with rice at Rs.10.80 per kg.So that the mixture worth Rs.10per kg? A) 7 : 8 B) 8 : 7 C) 6 : 5 D) 5 : 6
13 A person has 1000 kg of sugar, part of which he sells at 8%profit and rest at 18% profit.He gains 14% on the whole .The quantity sold at 18% profit is A) 400 kg B) 560 kg C) 600 kg D) 640 kg
14 In what ratio must a grocer mix two varieties of tea worth Rs.60 per kg and Rs.65 per kg.So that by selling the mixture at Rs.68.20 per kg he may gain 10%? A) 3 : 2 B) 3 : 4 C) 3 : 5 D) 4 : 5
15 A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup.How much of the mixture must be drawn off and replaced with watr so that the mixtre may be half water and half syrup? A) $\frac{1}{3}$ B) $\frac{1}{4}$ C) $\frac{1}{5}$ D) $\frac{1}{7}$
