2019 · Q40
Tushar takes 6 hours to complete a piece of work, while Amar completes the same work in 10 hours. If both of them work together, then what is the time required to complete the work?
Elementary MathematicsTime and Work
- A3¾ hours
- B3 hours 15 minutes
- C3 hours 30 minutes
- D3 hours 45 minutes
Explanation
Combined rate = 1/6 + 1/10 = 8/30 of the work per hour, so together they need 30/8 = 3.75 hours = 3 hours 45 minutes.