SOLUTION: Help! It takes Ryan 4 hours to paint a room. It takes Tiffany 6 hours to paint the same room. How long will it take them to paint the room if they do the job together? A. 2 1/5 h

Algebra ->  Test -> SOLUTION: Help! It takes Ryan 4 hours to paint a room. It takes Tiffany 6 hours to paint the same room. How long will it take them to paint the room if they do the job together? A. 2 1/5 h      Log On


   



Question 874443: Help!
It takes Ryan 4 hours to paint a room. It takes Tiffany 6 hours to paint the same room. How long will it take them to paint the room if they do the job together?
A. 2 1/5 hours
B. 2 2/5 hours
C. 1 1/6 hours
D.5/6 hours

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
1%2F4+%2B+1%2F6+=+1%2Fx |Multiplying thru by 24x so as all denominators = 1
6x + 4x = 24
10x = 24
x = 2.4hr 0r 2hr and 24min