1. A merchant has 50 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?
2. A mixture of 20 kg of spirit and water contains 10% water. How much water must be added to this mixture to raise the percentage of water to 25%?
3. Shine mixes 80kg of sugar worth of Rs 67.5 per kg with 120 kg worth Rs 80 per kg. At what rate shall he sell the mixture to gain 20%?
4. A jar full of whisky contains 40% alcohol. A part of this whisky is replaced by another containing 19% alcohol and now the percentage of alcohol was found to be 26%. The quantity of whisky replaced is?
5. Two vessels A and B contain milk and water mixed in the ratio 5:3 and 2:3. When these mixtures are mixed to form a new mixture containing half milk and half water they must be taken in th ratio?
6. The ratio of milk and water in 66 kg of adulterated milk is 5:1. Water is added to it to make the ratio 5:3. The quantity of water added is?
7. Some amount out of Rs 7000 was lent at 6% per annum and the remaining at 4% per annum. If the total simple interest from both the fractions in 5 years is Rs 1600, the sum lent at 6% per annum is?
8. 729 ml of a mixture contains milk and water in the ratio 7:2. How much more water is o be added to get a new mixture containing milk and water in the ratio 7:3
9. A dishonest milkman professes to sell his milk at cost price but he mixes with water and there by gains 25%. The percentage of water in the mixture is?
10.A sum of Rs 4100 was divided among 50 boys and girls. Each boy gets 90 Rs and a girl 65 Rs. The number of boys is?
11.A can contains a mixture of two liquids A and B in the ratio 7:5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7:9. How many litres of liquid A was contained in the can initially?
12.In a mixture of 60 litres, the ratio of milk and water is 2:1. If the ratio of the milk and water is to be 1:2, then the quantity of water to be further added is?
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