a contractor undertook a contract to complete a stadium in 9 months with a work force of 560 men. later on, it was required to complete the job in 7 months how many extra men would he employ?
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Answer:
160.
Step-by-step explanation:
men needed to complete it in 9 months=560
man needed to complete it in 1 month =(560×9)
man needed to complete it in 7months=(560×9÷7)
=(80×9)
=720
extra men needed=(720-560)
=160
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