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Mathematics, 11.08.2021 14:10 payshencec21

a can complete a piece of work in 10 days B can do it in 12 days C can do it in 15 days in how many days will they finish the work if they work together​

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a can complete a piece of work in 10 days B can do it in 12 days C can do it in 15 days in how many...
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