A can complete a task in 10 days, and B can complete it in 20 days. If they work together for 5 days, what fraction of the work remains unfinished?
- A. 1/4
- B. 4/3
- C. 3/4
- D. 3/20
- 1/4
Please select one of the options to reveal the correct answer.
Please select one of the options to reveal the correct answer.