By selling 20 items, a shopkeeper gains the selling price of 5 items. His gain percentage is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. %.
Let SP of 1 item = 1
Total SP = 20 × 1 = 20
Gain = 5 × 1 = 5
CP = 20 - 5 = 15
Gain percentage = (5/15) × 100 = %