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?
(a) 38 kg (b) 43 kg
(c) 54 kg (d) 63 kg
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(a) 38 kgs is correct. .............
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