Question

30 men repair a waal of 150 meter in 12 days .how much men will repqir a wall of 600 meter in 30 days?

Answer 1

150m by 30 mens
so 1m =30/150=1/5m

now 600m*1/5=120mens

in 12 days 30 mens
in 1 day =30/12=15/6

in 30 days 15 /6*30=75 mens

Answer 2

 150      = 5/12

30 x12 (men-day)

  5   x  30x = 600

 12

30x = 600 x 12/5

x = (600 x 12) / (5x30) = 48men