SOLUTION: If bob can mow a lawn in 5 hours, and jim can mow the same lawn in 3 hours,how long will it take if they work together?

SOLUTION: If bob can mow a lawn in 5 hours, and jim can mow the same lawn in 3 hours,how long will it take if they work together?

Algebra.Com

Question 350001: If bob can mow a lawn in 5 hours, and jim can mow the same lawn in 3 hours,how long will it take if they work together?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Bob can do the job in 5 hours
so he does 1/5 of the job in 1 hour.
..
Jim does in 3 hours.
he does 1/3 of the job in 1 hour.
Together they do 1/3 + 1/5 of the job in 1 hour
=8/15 of the job.
so they will take 15/8 hours to do the job together.
1.87 hours
RELATED QUESTIONS
Ted can mow a lawn in 5 hours while eliot can mow the same lawn in 8 hours. How long will (answered by josmiceli)

Suppose one person can mow a lawn in x hours and a second person can mow the same lawn in (answered by richwmiller)

Bob can mow the lawn in 5 hours, and Fred can mow the lawn in 4 hours. How long will it... (answered by josgarithmetic)

sam can mow a lawn in 6hrs, and Jim can mow the same lawn in 4hrs. How long will it take... (answered by scott8148)

Mo can mow a lawn in 4 hours. His twin brother Joe can mow the same lawn in 5 hours. How... (answered by nerdybill)

If Sammy can mow a lawn in 3 hours and Laura can mow the same lawn in 4 hours, how long... (answered by richwmiller)

if sammy can mow a lawn in 3 hours and laura can mow the same lawn in 4 hours, how long... (answered by nerdybill)

John can mow a lawn in 2 hours, and Peter can mow the same lawn in 3 hours. How long... (answered by amarjeeth123)

Terri and Judy run a lawn mowing business. If Terri can mow a large lawn in 8 hours and... (answered by Alan3354)