A, B, and C can complete a work in 10, 12, and 15 days, respectively. How long will it take for A, B, and C to complete the work together?
Q1. A, B, and C can complete a work in 10, 12, and 15 days, respectively. How long will it take for A, B, and C to complete the work together?
Answer: 4 days
Explanation: Rate of A = 1 / 10, B = 1 / 12, C = 1 / 15. Combined rate = 1 / 10 + 1 / 12 + 1 / 15 = 1 / 4. So, time taken = 4 days.