Question 994648
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x=number of men to do job in 15 days
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{{{(6_men)(20_days)=(x)(15_days)}}}
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{{{(120_man-days)=(15_days)(x)}}}
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{{{(120_man-days)/(15_days)=x}}}
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{{{8_men=x}}}
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ANSWER: Eight men can do the job in 15 days.