Q. A takes 10 days more than B to finish work. Together, they finish in 12 days. How long will A take alone?
✅ Correct Answer: (D)
30 days
Explanation: Let B = x → A = x+10. 1/x + 1/(x+10) = 1/12 → solving → A ≈ 30 days.
Explanation by: Ankit Singh
Let B = x → A = x+10. 1/x + 1/(x+10) = 1/12 → solving → A ≈ 30 days.