SOLUTION: Lisa can fill a order in 9 hours. Tom can fill an order in 10 hours. How long will it take working together for them to fill the order?
Algebra.Com
Question 995853: Lisa can fill a order in 9 hours. Tom can fill an order in 10 hours. How long will it take working together for them to fill the order?
Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website!
.
Lisa can fill a order in 9 hours. Tom can fill an order in 10 hours. How long will it take working together for them to fill the order?
-------------------------------------------------------------------------
Since Lisa can complete the order in 9 days, she is completing of the job per hour.
Since Tom can complete the job in 10 days, he is completing of the job per hour.
So, working together, Lisa and Tom can complete of the job per hour.
Now you need to calculate this sum of two fractions, . It requires standard operations:
- to convert fractions to a common denominator, which is equal to 90 in this case;
- then add numerators;
- then reduce the resulting fraction if possible:
= = = .
Thus, working together, Lisa and Tom can complete of the order per hour.
Hence, it will take = hours for Lisa and Tom to complete this job working together.
Answer. Working together, Lisa and Tom can complete the job in hours.
See the lesson Using fractions to solve word problems on joint work in this site for more rate-of-work problems.
RELATED QUESTIONS
Sue an experienced shipping clerk, can fill a certain order in 10 hours. Tom, a new clerk (answered by fractalier)
Lisa, an experienced clear can fill a certain order in 13 hours. Jim a dies the same job... (answered by richwmiller)
Lisa,an experienced shipping clerk, can fill a certain order in 6 hours. Felipe, a new... (answered by mikeebsc)
Lisa, an experienced shipping clerk, can fill a certain order in 8 hours. Felipe, a new... (answered by richwmiller)
Maria, an experineced shipping clerk, can fill a certain order in 3 hours. tom a new... (answered by josmiceli)
Janet, an experienced shipping clerk, can fill a certain order in 6 hours. Tom, a new... (answered by josgarithmetic)
Janet,an experienced shipping clerk, can fill a certain order in 2 hours. Tom, a new... (answered by richwmiller)
Sue an experienced shipping clerk can fill a certain order in 7 hours. tome a new clerk... (answered by Alan3354)
Janet, an experienced shipping clerk,can fill a certain order in 10 hours. Felipe, a new... (answered by stanbon)