A man can do a work in 15 days.
His father do this work in 20 days
and man's son do this work in 25
days. If all do the work together,
how many days will they take?
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I think the answer is 60 days and happy janmashtami
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Step-by-step explanation:
In 1 day work done by a man is 1/15
In 1 day work done by his father is 1/20
In 1 day work done by his son is 1/25
In 1 day work done by all are 1/15+1/20+1/25
Work done by all in 1÷(1/15+1/20+1/25)
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