Math, asked by ahmeddanish686, 2 months ago

John and David can do a piece of work separately in 30 and 20 hour respectively. in how many hours will they finish it work together

Answers

Answered by govindalakshmi600

0

Answer:

15 hours I think so I am 2 std student only

Answered by priyanshivyas8

0

yes the answer is 15 hours

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