Q. A and B together can do a work in 6 days. A alone can do it in 10 days. How long will B alone take?
✅ Correct Answer: (B)
15 days
Explanation: B's 1-day work = 1/6 - 1/10 = 1/15. Hence, B alone takes 15 days.
Explanation by: Krishna Sharma
B's 1-day work = 1/6 - 1/10 = 1/15. Hence, B alone takes 15 days.