A company has a job to prepare certain number of cans and there are three machines A, B and C for this job. A can complete the job in 2 days, B can complete the job in 5 days and C can complete the job in 7 days. How many days the company will it take to complete the job if all the machines are used simultaneously?
Choose the correct choice from the following:
A) 71/59 days  B) 70/59 days  C) 3 days  D) 12days  E) 14 days
Let the total number of cans to be prepared be 70.   The number of cans prepared by A in 1 day = 35.   The number of cans prepared by B in 1 day = 14.   The number of cans prepared by C in 1 day = 10.   Thus, the total number of cans that can be prepared by all the machines working simultaneously in a single day = 59.   Therefore, the number of days taken to complete the whole work = 70/59 days.   ANSWER:70/59 days
<result>B</result>
A company has a job to prepare certain number of cans and there are three machines A, B and C for this job. A can complete the job in 2 days, B can complete the job in 5 days and C can complete the job in 7 days. How many days the company will it take to complete the job if all the machines are used simultaneously?