SOLUTION: If Al can paint a room in 20 hours, and Bill can paint a room in 30 hours, how long will it take to paint a room if they work together?

SOLUTION: If Al can paint a room in 20 hours, and Bill can paint a room in 30 hours, how long will it take to paint a room if they work together?

Algebra.Com

Question 843332: If Al can paint a room in 20 hours, and Bill can paint a room in 30 hours, how long will it take to paint a room if they work together?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/20+1/30=1/x
x=12 hours for them together
check
12/20+12/30=1
6/10+4/10=1

RELATED QUESTIONS
Sam and Pat are painting a room. Sam can paint the room in 3 hours, Pat can paint the... (answered by stanbon)

Nicole can paint a room in six hours, Alexandra can paint a room in 5 hours, and Liana... (answered by josmiceli)

Joe can paint a room in 3 hours, fred can paint a room in 4 hours and Bill can paint a... (answered by josmiceli)

Jake can paint a room in 7 hours, and Karen can paint the same room in 5 hours. How long... (answered by solver91311)

one painter can paint a room in 12 hours and another can paint the same room in 10 hours. (answered by ewatrrr)

working alone, Wade can paint a certain room in 9 hours. Phil, working alone, can paint... (answered by josmiceli)

Working alone, Phil can paint a certain room in 9 hours. Wade, working alone, can paint... (answered by richwmiller)

sally can paint a room in 6 hours, it takes steve 3 hours to paint the same room. how... (answered by josmiceli)

You can paint a room in 8 hours.Your dad can paint the same room in 6 hours .If you... (answered by Alan3354,addingup,ikleyn)