Sonal and Arjun together can finish a piece of work in 57 days, Arjun and Rohan in 38 days, and Rohan and Sonal in 38 days, then Sonal, Arjun, and Rohan together can finish the same work in how many days?
1
31.5 days
2
28.5 days
3
26.5 days
4
24.5 days