Question

12 men working 4 hours a day,take 24 days to build a wall whose dimension 60*3*1 .how many days will it take 36 mens, working 2 hours a day to build a wall whose dimensions 90*1*4

Answer 1

Step-by-step explanation:

Apply chain rule : M1D1T1W2=M2D2T2W1

W1=60×3×1=180

W2=90×1×4=360

12×24×4×360=36×D2×2×180

D2=32days ans