alleryStart learning →A and B together finish in 6 days; A alone in 10. At constant independent work rates, how long would B alone take?
A15 days
B4 days
C16 days
D12 days
Answer & Solution
Correct answer: A. 15 days
B's daily share is 1/6 − 1/10 = 1/15 of the job, so B alone needs fifteen days.
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