Quantitative Aptitude Ques 987

Question: If the price of petrol be raised by 20%, then the percentage by which a car owner must reduce his consumption, so as not to increase his expenditure on petrol, is

Options:

A) $ 16\frac{1}{3} $

B) $ 16\frac{2}{3} $

C) $ 15\frac{2}{3} $

D) $ 15\frac{1}{3} $

Show Answer

Answer:

Correct Answer: B

Solution:

  • Percentage decrease in the consumption
    $ =[ \frac{a}{100+a}\times 100 ] $ % $ =[ \frac{20}{100+20}\times 100 ] $ $ [\because a=20,\text{given }] $ $ =\frac{50}{3}=16\frac{2}{3} $ %
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