A shopkeeper normally makes a profit of 20% in a certain transaction; he weighed 900 grams instead of 1 kg due to an error in the weighing machine. If he charges 15% less than what he normally charges, then what is his actual profit or loss percentage?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 13.33% profit.
Let CP = 100
Normal SP = 100 + 20% of 100 = 120
Discounted SP = 120 - 15% of 120 = 120 - 18 = 102
CP of 900 gm = (900/1000) × 100 = 90
Profit = 102 - 90 = 12
Profit% = × 100 = 13.33%