Quantitative Aptitude · Time & Work
A can complete a work in 12 days and B can complete the same work in 18 days. If they work together, how many days will they take to finish the work?
Question
A can complete a work in 12 days and B can complete the same work in 18 days. If they work together, how many days will they take to finish the work?
Options
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Explanation
Work done by A in 1 day = 1/12 Work done by B in 1 day = 1/18 Combined work in 1 day = 1/12 + 1/18 = 3/36 + 2/36 = 5/36 Time required = 1 ÷ (5/36) = 36/5 = 7.2 days