B can work 3 times faster than A. They work together on a task and complete it in a day. How long does it take for B alone to complete the task?
Q1. B can work 3 times faster than A. They work together on a task and complete it in a day. How long does it take for B alone to complete the task?
Answer: 4/3 days
Explanation: B is 3× faster; if A's rate = x, B's rate = 3x; combined 4x = 1/day → x = 1/4; B alone = 1/3x = 4/3 days.