SOLUTION: solve. by checking work records a plumber finds that worker A can do a certain job in 12 hours.worker B can do the same job in 9 hours. how long would it take if they worked togeth
Algebra ->
Customizable Word Problem Solvers
-> Misc
-> SOLUTION: solve. by checking work records a plumber finds that worker A can do a certain job in 12 hours.worker B can do the same job in 9 hours. how long would it take if they worked togeth
Log On
Question 601678: solve. by checking work records a plumber finds that worker A can do a certain job in 12 hours.worker B can do the same job in 9 hours. how long would it take if they worked together? (algebra) Answer by solver91311(24713) (Show Source):
If A can do a job in x time periods, then A can do of the job in 1 time period. Likewise, if B can do the same job in y time periods, then B can do of the job in 1 time period.
So, working together, they can do
of the job in 1 time period.
Therefore, they can do the whole job in:
time periods.
John
My calculator said it, I believe it, that settles it
