Correct Answer - Option 2 : 38%
Given:
While buying he get 15% profit and while selling 20% profit.
Calculation:
Let be assume profit in first trade is x and second trade y
⇒ Shopkeeper get 15% of profit in his first trade
⇒ Shopkeeper get 20% of profit in the second trade
⇒ Final profit of shopkeeper = [x + y + (xy/100)]%
⇒ [15 + 20 + (15 × 20)/100] = 38%
∴ The required result will be 38%.