Brett can plow out all the driveways on his street with his new four-wheel-drive truck in 2 hours. using a snow blade on a lawn tractor, his neighbor can plow out the same number of driveways in 6 hours. how long would it take them to do the work together?
Accepted Solution
A:
1/2+1/6=1/n 4/6=1/n 4n=6 n=6/4=3/2 hours to do the driveways, working together ☺☺☺☺