If 49 men can dig a well 28 m deep in 52 days, how many men will be required to dig a
well 40 m deep in 35 days?
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Answer:
28m deep well can be dug in 52 days by 49 men
1m deep can be dug in 52 days by 49/28 = 7/4 men
1m deep can be dun in 1 day by 7/4 x 52 = 91 men
40m deep can be dug in 1 day by 91 x 40 = 3640 men
40m deep can be dug in 35 days by 3640/35 = 104 men
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