A is twice as good as B. Together, they finish a work in 14 days. How many days will A take to finish the work alone?
Q1. A is twice as good as B. Together, they finish a work in 14 days. How many days will A take to finish the work alone?
Answer: 21 days
Explanation: If A is twice as good as B, then A's work rate is 2x and B's is x. Together, they work at a rate of 3x. So, 1/(3x) = 1/14, giving x = 1/42. A's work rate is 2x = 1/21. So, A will take 21 days.