Question

a lemon vendor buys certain number of lemons at three per rs.1 and an equal number of lemons at four per rs.2. she mixes them and forms heaps of 10 to be sold at rs.6 per heap. what is the vendor’s profit/loss percent?

Answer 1

Cost price of 1st set of lemons
= Rs. 1/3
Cost price of 5 lemons = Rs. 5/3

Cost price of 2nd set of lemons
= Rs. 1/2
Cost price of 5 lemons = Rs. 5/2

So the cost price of 10 lemons
= 5/3 + 5/2
= Rs. 25/6
= Rs. 4.16

Selling price of 10 lemons = Rs. 6

Profit of the vendor = Rs. 6 - Rs. 4
= Rs. 2

Profit % = 2/4 × 100 = 50 %.