Question

70 men can complete a wall of 150 metre in 12 days. How many men will complete the Wall of 600 metre in 30 days.

Answer 1

70 men  = 150 meter  = 12 days

?  men = 600 meter = 30 days

one men = 150 meter = 70*12 days = 840 days

one man = 1 meter wall = 840 /150 =5.6 days

one man  = 600 meter = 5.6*600 =3360 days

the works need to be complete in 30 days.

so lets X no of men are required for them

since

X*30 = 3360

X = 3360/30 =112 men