1.

1). 82). 103). 124). 15

Answer»

Let the number of MEN who agreed to do the work in 20 days be x

⇒ work DONE by x men = 20x

Also given (x - 5) men will complete the work in 40 days

⇒ work done by (x - 5) men = 40(x - 5)

SINCE the work done by both are same

⇒ 20x = 40(x - 5)

⇒ 20x - 40X = - 200

⇒ x = 10

∴ No of men who had agreed to do the work originally = 10



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