2015 · Q18
A person could save 10% of his income. But 2 years later, when his income increased by 20%, he could save the same amount only as before. By how much percentage has his expenditure increased?
Elementary MathematicsPercentages
- A222/9\%
- B231/3\%
- C242/9\%
- D252/9\%
Explanation
He saves 0.1I and spends 0.9I. After a 20% rise, income is 1.2I and spending is 1.2I − 0.1I = 1.1I. The rise in expenditure is (1.1−0.9)/0.9 = 2/9 = 222/9% (option A).