if 5 men can completed a work 7 days. so how long will be 15 men complete the work?
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if 5 men can completed a work 7 days. so how long will be 15 men complete the work?
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1men complete a work=7/5days
So,15men complete a work=7/5×15
=7×3=21days
therefore,21days 15 men will complete their work.
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