SOLUTION: alma can do a job in 12 hours, after she had worked for 4 hours, she was joined by marie, and they finished the job together in 2 more hours. how long will it take marie to do the

Algebra ->  Rate-of-work-word-problems -> SOLUTION: alma can do a job in 12 hours, after she had worked for 4 hours, she was joined by marie, and they finished the job together in 2 more hours. how long will it take marie to do the       Log On


   

Question 986079: alma can do a job in 12 hours, after she had worked for 4 hours, she was joined by marie, and they finished the job together in 2 more hours. how long will it take marie to do the whole job?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
Alma's rate    1/12
Alma and Marie   ?
Marie's rate     ?


Goal of the work is 1 job.
%281%2F12%29%2A4%2B%281%2F12%2B1%2Fx%29%2A2=1
x is how much time Marie would need to do one job alone.