A contractor under took to dig a canal in 72 days .He employed 70 men to dig it. How many extra men should he employ in order to finish the work in 12 days
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Step-by-step explanation:
Total time given =35 days.
To dig a canal of 2 km in 20 days, 90 men were required.
So, to dig a canal of 1 km in 1 day, 290×20 men will be required.
So, to dig a canal of 4 km in 15 days 15900×4 =240 men will be required.
As 90 men were already employed, so 150 more men are required.
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