SOLUTION: sally can paint a room in 4 hours while it takes steve 7 hours to paint the same room. how long would it take them to paint the room if they worked together?

Algebra ->  Linear-equations -> SOLUTION: sally can paint a room in 4 hours while it takes steve 7 hours to paint the same room. how long would it take them to paint the room if they worked together?       Log On


   

Question 478839: sally can paint a room in 4 hours while it takes steve 7 hours to paint the same room. how long would it take them to paint the room if they worked together?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
This is a parallel input problem, commonly seen in pumps and flow rates and electrical resistances.
--------------------
Hint: Consider what part of a room Sally paints per hour, and what part Steve does per hour.