Question

Frances can complete a job in 12 hours, and joan can complete the same job in 8 hours. Frances starts the job at 9 a.M., and stops working at 3 p.M. If joan starts working at 4 p.M. To complete the job, at what time is the job finished?

Answer 1

Answer:

Job finished at 8 p.m.

Hope this helps!

Step-by-step explanation:

Frances worked 6 hours.  Since she takes 12 hours for the whole job, she has done half the job.

Half the job remains for Joan to do.

Since Joan takes 8 hours for a whole job, she takes 4 hours for half a job.

So Joan will take 4 hours to finish the job.

Since she starts at 4 p.m., the job will be finished at 8 p.m.