A. Rs. 20
B. Rs. 21.81
C. Rs. 22
D. Rs. 18.33
✅ The correct answer is option D. Rs. 18.33.
A’s daily earning = Rs.(150-76)= Rs.74
C’s daily earning = Rs.[(150-(56+74)]=Rs.20
= 15*28 days Time taken by 21 men = (15*28)/21 = 20 days
t = 3.33 hrs = 3 hrs 20 minutes