A can do a work in 20 days and B in 30 days. They work together for 6 days. What fraction of the work is left?

A. \(\frac{2}{5}\)

B. \(\frac{1}{2}\)

C. \(\frac{1}{3}\)

D. \(\frac{3}{5}\)

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

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Answer: B. \(\frac{1}{2}\)

Answer: (B) \(\frac{1}{2}\)

Together per day = \(\frac{1}{20} + \frac{1}{30} = \frac{1}{12}\). In 6 days they do \(\frac{6}{12} = \frac{1}{2}\).

Work left = \(\frac{1}{2}\).

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

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