Q. A can do a work in 15 days. B can do it in 20 days. C can do it in 30 days. In how many days will they complete it together?
✅ Correct Answer: (B)
6 days
Explanation: 1/15 + 1/20 + 1/30 = 9/60 = 3/20 → time = 20/3 ≈ 6 days.
Explanation by: Admin
1/15 + 1/20 + 1/30 = 9/60 = 3/20 → time = 20/3 ≈ 6 days.