SOLUTION: It takes bill 2 hours to plow the driveways on his street. It takes Carl 3 hours to plow the same driveways. How long would it take them if they worked together?
Algebra.Com
Question 917377: It takes bill 2 hours to plow the driveways on his street. It takes Carl 3 hours to plow the same driveways. How long would it take them if they worked together?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1/a+1/b=1/x
1/2+1/3=1/x
3/6+2/6=1/x
5/6=1/x
x=6/5
x=1.2 hours working together
check
x/a+x/b=1
x/2+x/3=1
1.2/2+1.2/3=1
0.6+0.4=1
1.0=1
ok
codewt
RELATED QUESTIONS
1. It takes Bill 6 hours longer than John to plow a certain field. Together they can plow (answered by haileytucki,richard1234,Finavon)
It takes Mang kaloy 3 hours to plow his ricefield with his new tractor. Using the old... (answered by Alan3354)
It takes my father 3 hours to plow our cornfield with his new tractor. Using the old... (answered by ankor@dixie-net.com)
a farmer can plow a certain field three times as fast as his son. working together it... (answered by htmentor)
five farmers can plow a certain field in seven hours. how long will it take eight farmers (answered by josmiceli)
It takes my Father 3 hours to plow the our cornfield with his new tractor. Using the old... (answered by ankor@dixie-net.com)
it takes mang kaloy 3 hrs to plow his ricefield with his new tractor. using the old... (answered by ankor@dixie-net.com)
Question 1.
One printing machine works twice as fast as another. When both machines are... (answered by scott8148)
IT TAKES THE FARMER APROXIMATELY 5 MINUTES TO PLOW A STRIP OF LAND THAT MEASURES 10 FEET... (answered by checkley75)