How many kilograms of sugar costing Rs. 9 per kg must be mixed with 27 kg of sugar costing Rs. 7 per Kg so that there may be a gain of 10 % by selling the mixture at Rs. 9.24 per Kg ?
Explanation:
C.P. of 1 kg sugar of 1st kind C.P. of 1 kg sugar of 2nd kind
9 7
8.40
1.40 0.60
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.
Hence, option 3 is the correct answer.
![]()
By: Amit Kumar