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Question 20
A spends 65% of his income. His income is increased by 20.1% and his expenditure is increased by 25%. His savings:
Solution
Let the income be Rs.100.
Expendiiture = 65
Saving = 100 - 65 = 35
Income is increased by 20.1%..
So,
Income = Rs.120.1
Expenditure is increased by 25%..
So,
Expenditure = 65 $$\times \frac{125}{100}$$ = 81.25
Saving = 120.1 - 81.25 = Rs.38.85
Increment in saving = 38.85 35 = 3.85
Percentage increment in saving = $$\frac{3.85}{35} \times 100$$ = 11%
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