Q36. A grocer purchased 20 kg of wheat at the rate of Rs 15 per kg and 30 kg of wheat at the rate of Rs 13 per kg At what price per kg should he sell the mixture to earn % profit on the cost price?
(c) Rs 18.40
CP=20×15+30×13=Rs 690SP=43 of 690 ×150=Rs 18.40