Question
Download Solution PDFThe cost of apples is increased by 20% and then decreased by 20%. What is the net pecentage decrease?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The cost of apples is increased by 20% and then decreased by 20%.
Calculation:
Let the price of apples be Rs. 100
After increase it is 100 × 120%
⇒ Rs. 120
After decrease it is 120 × 80%
⇒ Rs. 96
So, decrease = 100 - 96
⇒ Rs. 4
% of decrease = (4/100) × 100
⇒ 4%
∴ The net percentage decrease is 4%.
Shortcut Trick
| Before | After | |
| 20% increase | 5 | 6 |
| 20% decrease | 5 | 4 |
| Net | 25 | 24 |
So, net pecentage decrease 1/25 × 100 = 4%
Last updated on Jul 8, 2025
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