Question 355374
Let b=time it takes bob's hose and j=jim's hose's time
b=.8j
1/b + 1/j = 1/18
1/.8j + 1/j = 1/18
18+14.4=0.8j Multiply each side by LCM=14.4 to eliminate fractions.
.8j=32.4
j=40.5 hrs
b=32.4 hrs
.
Ed