Q. A completes a work in 30 days and B in 45 days. If both work together for 9 days, what fraction of the work remains?
✅ Correct Answer: (B)
1/2
Explanation: Combined rate = 1/18. In 9 days completed = 1/2. Remaining = 1/2.
Explanation by: Deepak Sahoo
Combined rate = 1/18. In 9 days completed = 1/2. Remaining = 1/2.