Question

90 men can complete a work in 24 days working 8 hours a day. How many men are required to complete the same work in 18 days working 7 1/2 hours a day? ​

Answer 1

Let x men complete the same work in 18 days working for 721 hours, which 90 men complete in 24 days and 8 hours a day.

90×24×8=x×18×215

⟹x=18×1590×24××2

x=128 men.

Answer 2

Answer:

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