Question

A fruit vendor buys some orange at the rate of Rs 5 per oranges. he also buys an equal number of Bananas At the rate of Rs 2 per banana. He makes a 20% profit on oranges and a 15% profit on bananas .At the end of the day, all the fruit is sold out. his total profit is rs 390. find the number of orange purchased.

Answer 1

Let no. of oranges be x
Then,
Cp of oranges= 5x
Cp of bananas=2x
Total Cp=7x
Sp of orange =6x
Sp of banana=23x/10
Total Sp=83x/10
Gain=Sp-Cp
=83x/10-7x
=13x/10
Gain=390
13x/10=390
13x=390*10
x=3900/13
x= 3000