IBPS RRB Office Assistant 19 Nov 2016 Shift 1 Paper

Question : 80 of 80

Marks: +1, -0

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 gain of 10% by selling the mixture at Rs. 9.24 per kg?