when two persons work together than their one day work to be
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Step-by-step explanation:
Let A takes x number of days and B takes y number of days to complete work individually.
Therefore, 1/x +1/y = 1/p
In q days they can complete q/p work
Remaining work is 1 - q/p = (p-q)/p
This work is done by B in r days =>((p-q)/p)/(1/y) = r
Therefore, 1/y = (p-q)/p*r
Hence 1/x = 1/p - (p-q)/p*r = (r-p+q)/p*r
Therefore, A takes p*r/(r-p+q) days and B takes p*r/(p-q) days
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