Question

father is 5 times faster than son. father completes a work in 40 days before son. if both of them work together when will the work get complete?

Answer 1

$\color {blue} {Your~Solution:-}$

Father completes a work in 40 days
Father's one day work = 1/40

Father is 5 times faster than the son.
So,
Son completes same work in (40×5) = 200 days
Son's one day work = 1/200

If Both work together,
(1/40)+(1/200)
= (5+1)/200
= 6/200 = 3/100

Hence, they can do together this work in 33.33 days
or $\huge{33~days~and~8~hrs}$

$\color {green} {THANKS }$

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