Q. A can complete a work in 10 days and B can complete it in 15 days. If they work together for 3 days, what fraction of the work remains?
✅ Correct Answer: (B)
1/2
Explanation: Together, 1-day work = 1/10 + 1/15 = 1/6. In 3 days, they complete 1/2. Remaining work = 1/2, so the correct answer should be option2.
Explanation by: Krishna Sharma
Together, 1-day work = 1/10 + 1/15 = 1/6. In 3 days, they complete 1/2. Remaining work = 1/2, so the correct answer should be option2.