A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together.
Q1. A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together.
Answer: 22 ½ days
Explanation: Since A is 3 times as efficient, if A takes t days then B takes 3t days; 3t − t = 60 gives t = 30 (A) and 90 (B); together 1/30 + 1/90 = 4/90, so they finish in 22.5 days.