alleryStart learning →A alone does a job in 10 days, B alone in 15 days. Together they take
A6 days
B5 days
C12.5 days
D25 days
Answer & Solution
Correct answer: A. 6 days
Their daily work is 1/10 + 1/15 = 1/6 of the job, so together they need 6 days.
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