A contractor undertakes to dig a canal.6 km long,in 35 days and employed 90 men.He finds that after 20 days only 2km of canal have been completed.How many more men must be employed to finish the work in time?
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M1*D1*W2=M2*D2*W1
90*20*4=M2*15*2
6*10*4=M2
M2=240
240-90=150
required men 150
90*20*4=M2*15*2
6*10*4=M2
M2=240
240-90=150
required men 150
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