Question

A grocer purchased 80 kg of sugar at Rs.13.50 per kg and mixed it with 120 kg sugar at Rs.16 per kg. At what rate should he sell the mixer to gain 16%?

Answer 1

C.P of 200 kg of mixture = Rs. (80 * 13.50 + 120*16) = Rs.3000. 

S.P =116% of Rs.3000 =Rs.[(116/200) *3000]=Rs.3480. 

Rate of S.P of the mixture =Rs.[3480/200] per kg =Rs.17.40 per kg.