a b c working together can finish a price of work in 8 hours or long can do it in 20 hours and B alone can do it in 30 hours in how many hours will see finish the same work.
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a b c working together can finish a price of work in 8 hours or long can do it in 20 hours and B alone can do it in 30 hours in how many hours will see finish the same work.
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Answer:
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Step-by-step explanation:
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