15. A workforce of 210 men with a supervisor can finish a certain piece of work in 5 months.
How many extra men must he employ if he want to complete job in just 2 months?
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Step-by-step explanation:
THE PEOPLE NEEDED FOR 5 MONTHS =210 MEN
THE PEOPLE NEEDED FOR 1 MONTHS =210×5=1050
THE PROPLE NEEDED FOR 2 MONTHS =1050÷2 =525
THE EXTRA MEN WMPLOY IF HE WANT TO COMPLETE THE JOB IN 2 MONTHS =525-210=325
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