Q. A and B together can do a work in 10 days. B and C together can do the same work in 6 days. A and C together can do the work in 12 days. Then A, B and C together can do the work in

• A. 58/7 days
• B. 40/7 days
• C. 28 days
• D. 14 days

Correct Answer: B