SOLUTION: Randy can finish a certain job in 8 hours. Jerry can finish the same job in 10 hours, and John can finish the same in 7 hours. how long will they finish if they work together?
Algebra.Com
Question 450060: Randy can finish a certain job in 8 hours. Jerry can finish the same job in 10 hours, and John can finish the same in 7 hours. how long will they finish if they work together?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x/8+x/10+x/7=1
x=280/103=2.72 hours
RELATED QUESTIONS
John can finish painting a house in 8 hours.
Julie can finish the same job in 10 hours.
(answered by richwmiller)
Ana can finish a certain job in 10 hours. Together, Ana and Nina can finish the same job... (answered by josgarithmetic)
21. If carol can finish a job in 5 hours and Steve can finish the same job in 10 hours,... (answered by josmiceli)
If carol can finish a job in 5 hours and Steve can finish the same job in 10 hours, how... (answered by richwmiller)
John can finish a job in 5 hours. Steve can finish the same job in 4 hours. After working (answered by richwmiller,Bastian21)
John can finish a job in 5 hours. Steve can finish the same job in 4 hours. After working (answered by richwmiller)
Machine A can do a certain job in 8 hours. machine B can do the same job in 10 hours.... (answered by stanbon)
Marko can finish a job in 6 hours. Kira can finish the same job in 4 hours. How many... (answered by josgarithmetic)
The first painter can finish a paint job in 3 hours. The second painter can finish the... (answered by edjones)