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The price of a certain item is increased by 15%. If a consumer wants to keep his expenditure on the item the same as before, how much per cent must he reduce his consumption of that item ?
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- 15%
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13 1 % 23 -
16 2 % 3 -
10 20 % 23
Correct Option: B
Using Rule 8,
If the price of a commodity increases by R%, then reduction in consumption, not to increase the expenditure is given by
 | × 100 |  | % | 100 + R |
| = | × 100 = | × 100 | 100 + 15 | 115 |
| = | = 13 | % | 23 | 23 |
