1 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
2 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
3 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
4 Milk and water in two vessels A and B are in the ratio 4 : 3 and 2 : 3 respectively.In what ratio the liquids in both the vessels should be mixed to obtsin anew mixture in vessel C, maintaining half milk and half water? A) 1 : 1 B) 7 : 5 C) 2 : 4 D) 1 : 3
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 A 24 litre mixture contains water : milk in the ratio of 3 : 5.How much water must be added to this mixture to reverse this ratio? A) 20 litres B) 24 litres C) 18 litres D) 16 litres
9 A trader mixes two varieties of tea costing Rs.40 per kg and Rs.50 per kg in the ratio 5 : 4.If the mixture is sold at Rs.48 per kg, what is the gain %? A) 7.5 % B) 8 % C) 2.5 % D) 8.5 %
10 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
11 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%
12 From two ornaments weighing 18 gms and 24 gms contain gold and silver in the ratio of 2 : 1 and 5 : 1 respectively.A new ornament is casted.What is the amount of gold in the new ornament? A) 10 gms B) 12 gms C) 32 gms D) 28 gms
13 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
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) $\frac{1}{7}$
