Q. A and B complete a job in 30 days. B and C complete the same in 24 days. C and A in 20 days. How long will all three together take?
✅ Correct Answer: (B)
12 days
Explanation: (A+B + B+C + C+A)/2 = 1/12.
Explanation by: Ankit Singh
(A+B + B+C + C+A)/2 = 1/12.