2017 · Q44
When prices rise by 12%, if the expenditure is to be the same, what is the percentage of consumption to be reduced ?
Elementary MathematicsPercentages
- A16 2/3%
- B10 2/7%
- C16 3/5%
- D10 5/7%
Explanation
New price = 1.12× old price; keeping expenditure fixed, new consumption = 1/1.12 of the old. Reduction = 1−1/1.12 = 0.12/1.12 = 3/28 = 10 5/7 %. Hence option (D) 10 5/7%.