1. In what proportion must rice at Rs 3.10 per kg be mixed with rice at 3.60 per kg, so that the mixture be worth Rs 3.25 a kg?
2. How many kilograms of sugar costing Rs 6.10 per kg, must be mixed with 126 kg of sugar costing Rs 2.85 per kg so that 20% may be gained by selling the mixture at Rs 4.80 per kg.
3. In what proportion must water be mixed with spirit to gain 16 ⅔ % by selling it at cost price?
4. In what ratio must a person mix three kinds of wheat costing him Rs 12.10, Rs 14.40, and Rs 17.40 per kg, so that the mixture may be worth Rs 14.10 per kg?
5. A butler stole wine from a butt of sherry which contained 40% of spirit and he replaced, what he had stolen by wine containing only 16% spirit. The butt was then of 24% strength only. How much of butt did he steal?
6. A container contains 80 kg of milk. From this container, 8 kg of milk was then taken out and replaced by water. This process was further repeated two times. How much milk is now contained by the container?
7. In what proportion must wheat at Rs 16 per kg be mixed with wheat at Rs 14.50 per kg, so that the mixture be worth Rs 15.40 per kg?
8. 15 litres of a mixture contains 20% alcohol and the rest water, If 3 litres of water be mixed in it, the percentage of water in the new mixture will be?
9. A grocer buys two kinds of rice at Rs 18.0 and Rs12.0 per kg respectively. In what proportion should these be mixed, so that by selling the mixture at 17.50 per kg, he can gain 25% profit?
10.Rs 1000 is lent out in two parts, one at 6% simple interest and the other at 8% simple interest. The early income is Rs 75. Find the sum lent at 8%.
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