The bridge is completed in 20 days by 80 men. How long will it take 70 men to complete the work?
The bridge is completed in 20 days by 80 men. How long will it take 70 men to complete the work?
Explanation
If 80 people complete the bridge in 20 days, then the total man-days required to complete the bridge is 80 people * 20 days = 1600 man-days.
Rounding up to the nearest whole number, 70 people will take approximately 23 days to complete the bridge