Math, asked by Imranmd58811, 10 months ago

P,Q,R and S can complete a piece of work in 20,30,15 and 45 hours respectively. How many hours they work together to complete the work ?

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Answered by snissarali

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P,Q,R and S can complete a piece of work in 20,30,15 and 45 hours respectively. How many hours they work together to complete the work ?

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