The price of petrol rises by 25%. By what percent must a car owner cut his consumption so that his spending on petrol rises by only 10%?

A. 12%

B. 10%

C. 14%

D. 15%

Doubtly AI Asked 27 Oct 2026 AI-generated · not yet verified ssc cgl Save WhatsApp Report

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Answer: A. 12%

Answer: (A) 12%

Shortcut: spending = price × consumption. New consumption factor = \(\frac{1.10}{1.25} = 0.88\), so the cut is 12%.

Plain: price 100 → 125, spending allowed 100 → 110, consumption = 110/125 = 88% of before.

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

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