A grocer purchased 80 kg of rice at Rs. 13.50 per kg and mixed it with 120 kg rice at Rs. 16 per kg. At what rate per kg should he sell the mixture to gain 16%? Choose the correct answer
A) Rs. 19
B) Rs. 20.5
C) Rs. 17.4
D) Rs. 21.6
E) Rs. 22.6
C.P OF 200 kg of mix = Rs.[ 80*13.50+120*16 ] =Rs.3000   S.P =116% of Rs.3000 = Rs. 116/100*3000 = 3480   Rate of S .P of the mixture = Rs. [ 3480/200] per kg   = Rs. 17.40 per kg   ANSWER:Rs. 17.4
<result>C</result>
A grocer purchased 80 kg of rice at Rs. 13.50 per kg and mixed it with 120 kg rice at Rs. 16 per kg. At what rate per kg should he sell the mixture to gain 16%?