Strawberries are bought at 5 for Tk 10 and sold at 6 for Tk 15. The gain percent is-

Question: Strawberries are bought at 5 for Tk 10 and sold at 6 for Tk 15. The gain percent is-

Solution:
Cost per strawberry = 10/5 Tk
= 2 Tk

Sell per strawberry = 15/6 Tk
= 2.5 Tk

So, gain percentage = {(2.5 - 2)/2} × 100
= 25 Tk or 25%