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The price of an article is reduced by 25% but the daily sale of the article is increased by 30%. The net effect on the daily sale receipts is
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2 1 % increase 2 -
2 1 % decrease 2 - 2 % increase
- 2% decrease
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Correct Option: B
Let the price of the article be ₹100 and the daily sale be 100 units.
∴ Revenue day = 100 × 100 = ₹10000
New receipts = 75 × 130 = ₹9750
Decrease = ₹(10000 – 9750) = ₹250
∴ % decrease
| = | × 100 = 2 | % | ||
| 10000 | 2 |
Aliter : Using Rule 5,
Required change
| = |  | a - b - |  | % | |
| 100 |
| = | | 30 - 25 - | | % | |
| 100 |
| = 5 - | = –2.5% | 2 |
| = 2 | % decrease. | 2 |
