Q. A can complete a work in 28 days and B in 42 days. In how many days will they complete the work together?
✅ Correct Answer: (A)
16.8 days
Explanation: Combined rate = 1/28 + 1/42 = 5/84. Time = 84/5 = 16.8 days.
Explanation by: Deepak Sahoo
Combined rate = 1/28 + 1/42 = 5/84. Time = 84/5 = 16.8 days.