Q. A can complete a work in 20 days and B can complete the same work in 30 days. In how many days will they complete it working together?
✅ Correct Answer: (B)
12 days
Explanation: 1 day's work of A = 1/20, B = 1/30. Together = 1/20 + 1/30 = 1/12. So they finish in 12 days.
Explanation by: Yami Thakur
1 day's work of A = 1/20, B = 1/30. Together = 1/20 + 1/30 = 1/12. So they finish in 12 days.