Question

90 men can complete a work 24 day working 8 hours a day how many men are required to complete the same work in 18 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

This is a inverse variation question.
90*24=18*number of men
2160=18*numbet of men
2160/18=number of men
120=number of men.

Idk the second part of the answer.