How many kilograms of sugar costing Rs/.9 per kg must be mixed with 27kg of sugar costing Rs.7 per kg so that there may ba gain of 10% by selling the mixture at Rs.9.24 per kg Answers.
A) 22  B) 63  C) 88  D) 26  E) 18
i. If S.P and gain are given, C.P =        PxS gain . %100 100 Rs. ii. The rule of allegation  Required ratio is cheaper quantity : dearer quantity = (d-m) : (m-c) Answer with Explanation: Step I : S.P of 1 kg of mixture = Rs. 9.24 Gain = 10%    C.P of 1 kg of mixture =        24.9 10100 100 x = Rs. 8.40  Mean price = Rs. 8.40/- Step (ii) By the rule of allegation vi. C.P of 1 kg of sugar of I kind (p) = 900 vii. C.P of 1 kg of sugar of II kind (p) = 700 viii. Mean price (p) = 840 ix. d – m = 900 - 840= 
<gadget id="calculator">900 - 840</gadget>
<output>60</output>
60 x. m – c= 840 – 700 = 140  Required ratio = 140 : 60 = 7 : 3 Step (iii) Let x kg of sugar of I kind be mixed with 27 kg of II kind    7 : 3 = x : 27  7/3 = x/27  x = 7/3 x 27 = 63 kg.   Answer:63
<result>B</result>
How many kilograms of sugar costing Rs/.9 per kg must be mixed with 27kg of sugar costing Rs.7 per kg so that there may ba gain of 10% by selling the mixture at Rs.9.24 per kg