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Question 62
If the price of petrol increases by 19%, and Sunitha intends to spend only an additional 12% on petrol, by what percent should she reduce the quantity of petrol purchased (nearest to an integer)?
Solution
Let the price of petrol be Rs.100 and Sunitha spent Rs.100.
After increment price of petrol = 119
Expenditure of petrol = 112
Reduce quantity of petrol = $$\frac{119 - 112}{119} \times 100 = \frac{7}{119} \times 100$$ = 5.88 ~ 6%
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