Question

Sonu buys 40 kg of wheat at Rs 12.50 per kg and 30 kg of wheat at Rs 14 per kg. at what rate per kg should he sell the mixture to gain 5% on the whole​

Answer 1

He spends a total amount=920

Avg rate=920/70=92/7

to get 5% interest rate he should sell

=92*1.05/7

Answer 2

Answer:

5/100=(sp-cp)/cp

(1/20×26.5)-26.5=sp

1113/40=sp

sp= 27.8