- A and B working together can finish a job in T days. If A works alone
and completes the job, he will take T + 5 days. If B works alone and
completes the same job, he will take T + 45 days. What is T?
(1) 25 (2) 60 (3) 15 (4) None of these
Solution:
The time it will take when A and B work together is given by the formula
(5*45)^(1/2) = 225^(1/2)= 15 days. Where 5 and 45 are the extra time that A and B take to complete the
job if the work alone as against working together.
