Question
How much groundnut powder at Rs. 90 a kg. should be
added to 56 kg. of cashew powder at Rs.310 a kg. so that by selling the mixture for Rs. 280 a kg, a person will gain 12% profit?Solution
Sol. C.P. of the mixture = 280 *100/112= 250 a kg. By Alligation rule: 310-250/250-90=60/160 ∴ Required ratio = 3:8 Therefore, when cashew powder is 56 kg, groundnut powder should be = 56*3/8 = 21 kg.
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