Question

A and B together complete a task in 24 days, C and B together complete the same task in 18 days ,and A and C together complete the task in 12 days .how many days will A take to complete the task if he works alone?

tell me the answer step by step.​

Answer 1

Answer:

A and B together can complete a task in 20 days. B and C together can complete the same task in 30 days. A and C together can complete the same task in 40 days. What is the respective ratio of the number of days taken by A when completing the same task alone to the number of days taken by C when completing the same task alone?

A) 2 : 5

B) 2 : 7

C) 3 : 7

D) 1 : 5