Mathematics
A and B together can do a piece of work in days, but B alone can do it in 10 days. How long will A take to do it alone?
Direct & Inverse Variations
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Answer
A + B can do the work in days.
(A + B)'s 1 day work =
B's 1 day work =
A's 1 day work =
=
=
A can do the work in days
Hence, A can do the work in 20 days.
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