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SSC CGL 2023 PYQ — Question 52

SSC CGL - 27 July 2023 - Shift 1 • Quantitative Aptitude • Q52

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If the price of petrol is increased by 81%, by what percentage should the consumption of petrol be decreased by the consumer if the expenditure on petrol remains unchanged? (Correct to two decimal places)

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Correct answer: D

Explanation

The correct answer is option 4 i.e. 44.75%.

Let the initial price petrol be Rs.100 per liter.

According to the given question,

New price of the petrol = 181% of 100 = Rs.181

Required percentage = 181−100181×100{{181 - 100}\over 181} \times 100

⇒ 81181×100{81\over 181} \times 100 = 44.75%

Hence the consumption should be decreased by 44.75%.