90 men can complete a work in 24 days working 8 hours a day. How many men are required to complete the … in 18 days working 7.1/2…
Answers:
In 24 days, working 8 hours a day, work can be completed by = 90 men
In 1 day, working 8 hours a day, work can be completed by = 90 × 24 men
In 18 days, working 8 hour a day, work can be completed by = (90 × 24)/18 men
‘’ ‘’ “ “ 1 hour “ “ “ “ = (90 × 24)/18 ×( 8 men)
“ “ 7. ½ i.e. 15/2 “ “ = (90 × 24 × 8)/18 × (2/15)
= (90 × 24 × 8 × 2)/18 × 15 = (1 × 24 × 8 × 2)/3 = 128 men