Given: Number of men = 20 Work = 180 packets Days = 1 Formula used: If ‘ M1 ’ person can do ‘ W1 ’ work in ‘ D1 ’ days and ‘ M2 ’ persons can do ‘ W2 ’ work in ‘ D2 ’ days, then M1D1/w1=M2D2/w2 M1,M2,D1,D2,W1,W2 are number of men, number of days and work Calculation:
M1=20;W1=180,D1=1;M2=M2;W2=135andD2=15
⇒(20×1)/180=(M2×15)/135 ⇒M2=1 ∴ 1 man are required to pack 135 boxes in 15 days.