Question

How much kilogram of sugar costing rs.3 per kg must be mixed with 9 kg of sugar costing rs. 5 per kg, so that there may be a gain of 15% by selling the mixture at rs.5.64 per kg?

Answer 1

C.P. of 1 kg sugar of 1st kind      C.P. of 1 kg sugar of 2nd kind 

 


 

Therefore, Ratio of quantities of 1st and 2nd kind = 14 : 6 = 7 : 3. 

Let x kg of sugar of 1st kind be mixed with 27 kg of 2nd kind. 

Then, 7 : 3 = x : 27 or x = (7 x 27 / 3) = 63 kg.

Answer 2

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