Q. A completes a work in 10 days and B in 40 days. If they work on alternate days starting with A, how much time is required?
✅ Correct Answer: (A)
14 days
Explanation: A=1/10, B=1/40 → 2-day work = 5/40 = 1/8. In 8 days = 1. Remaining work after 8 days = 0 so total = 2×? wait → actual cycles: 1 cycle=2 days=1/8, 7 cycles=14 days gives full work.
Explanation by: Yami Thakur
A=1/10, B=1/40 → 2-day work = 5/40 = 1/8. In 8 days = 1. Remaining work after 8 days = 0 so total = 2×? wait → actual cycles: 1 cycle=2 days=1/8, 7 cycles=14 days gives full work.