Answer:
Dorsey = 4.8 hours
Campbell = 24 hours
Step-by-step explanation:
It takes "x" hours for Dorsey
So, it will take 5 times more for Campbell, so
It takes "5x" hours for Campbell
Rate is inverse of time, so rates are:
Dorsey: 1/x
Campbell: 1/5x
We know Rate * Time = Work
When together, it takes 4 hours to finish a work, so we can write:

Solving for x, we get the time of Dorsey:

Dorsey takes 4.8 hours alone
Campbell takes 4.8 * 5 = 24 hours alone
Sorry just getting free points
Answer:
183.6
Step-by-step explanation:
51÷5=10.2 10.2×18=183.6
No, they are not.
Have a good day!
T+J=4 hours
x+2x=4 hours
3x=240 minutes
X=80 minutes