Medal to best help that allows me to find the answer. Carl can paint a room 3 hours faster than Jennifer can. If they work together, they can complete the job in 2 hours. Using complete sentences, explain each step in figuring out how to determine the time it would take Jennifer to complete this job on her own.

Question

anonymous · Answer

how do I set my equation up to solve this?

anonymous · Answer

This is my last question, then I'll be done for the day. I just need help on this one!

anonymous · Answer

@DariusX @Vocaloid @phi @Hero @tom982

mathstudent55 · Answer

Jennifer can paint the room in x hours.
Carl can paint the room in x - 3 hours.

In 1 hour, Jennifer does 1/x of the job.
In 1 hour, Carl does 1/(x - 3) of the job.

If they work together for 1 hour, they do

1/x + 1/(x - 3) of the job.

Together, they take 2 hours to complete the job.
That means in 1 hour, they do 1/2 of the job.

That means that 
1/x + 1/(x - 3) = 1/2

mathstudent55 · Answer

Solve for x to find how many hours Jennifer needs. Then subtract 3 hours to find Carl's hours.

anonymous · Answer

how do I solve for x? @mathstudent55

anonymous · Answer

anyone?

anonymous · Answer

@DariusX

anonymous · Answer

how do i solve for x?

anonymous · Answer

i keep getting 4

dariusx · Answer

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