SOLUTION: Elizabeth can collate a set of reports in 6 h. If I help I help her it takes 4 h. How long will it take me to do the job if I work alone?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Elizabeth can collate a set of reports in 6 h. If I help I help her it takes 4 h. How long will it take me to do the job if I work alone?      Log On


   

Question 938996: Elizabeth can collate a set of reports in 6 h. If I help I help her it takes 4 h. How long will it take me to do the job if I work alone?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Your two rates together are added. The unit for rate is SET per HOURS.

Your rate, 1%2Fx sets per hour, or more like set per hours

1%2F6%2B1%2Fx=1%2F4
Simplify using multiplication of left and right by 12x which is lowest common denominator.

x=12