Question 1090780
 If 12 men can unload 360 tonnes of goods in 5 hours, find the rate of unloading in tonnes/man-hour.
{{{360/((12*5))}}} = 6 tons per man-hr
:
 How many men are needed to unload 72 tonnes in 4 hours
let m = no. of men required to do this
4m * 6 = 72
24m = 72
m = 72/24
m = 3 men