Quantitative Aptitude · Time & Work
gopi can complete a work in 10 days, and surya can complete the same work in 15 days. If they work together, how many days will it take to finish the work?
Question
A can complete a work in 10 days, and B can complete the same work in 15 days. If they work together, how many days will it take to finish the work?
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Explanation
Work done by A in 1 day = 1/10 Work done by B in 1 day = 1/15 Combined work in 1 day = 1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6 Time required = 1 ÷ (1/6) = 6 days