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# 15 men take 21 days of 8 hours each to do a piece of work How many day

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Re: 15 men take 21 days of 8 hours each to do a piece of work How many day [#permalink]
(15.21.8.3)/(x.6.21.2)=30
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Re: 15 men take 21 days of 8 hours each to do a piece of work How many day [#permalink]
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Re: 15 men take 21 days of 8 hours each to do a piece of work How many day [#permalink]
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