alleryTwo friends clean a hall in 8 days together. One of them alone takes 24 days. The other alone takes
A12 days
B14 days
C10 days
D16 days
Answer & Solution
Correct answer: A. 12 days
The other's rate is 1/8 - 1/24 = 2/24 = 1/12, so 12 days.
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