SOLUTION: sally can paint a room in 6 hours, it takes steve 3 hours to paint the same room. how long will it take if they both work together?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: sally can paint a room in 6 hours, it takes steve 3 hours to paint the same room. how long will it take if they both work together?      Log On


   

Question 665479: sally can paint a room in 6 hours, it takes steve 3 hours to paint the same room. how long will it take if they both work together?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Add their rates of painting
( 1 room painted / Sally's time ) + ( 1 room painted / Steve's time ) =
( 1 room painted / time working together )
+1%2F6+%2B+1%2F3+=+1%2Ft+
Multiply both sides by +6t+
+t+%2B+2t+=+6+
+3t+=+6+
+t+=+2+
It will take them 2 hrs working together