SOLUTION: Please help me solve this problem Joe ran 8mph the first third of the trip, but soon got tired and slowed to 5mph for the rest of the two miles. How long did it take him to get

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Please help me solve this problem Joe ran 8mph the first third of the trip, but soon got tired and slowed to 5mph for the rest of the two miles. How long did it take him to get       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 273978: Please help me solve this problem
Joe ran 8mph the first third of the trip, but soon got tired and slowed to 5mph for the rest of the two miles. How long did it take him to get home?
Thank you for your help

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Joe ran 8mph the first third of the trip, but soon got tired and slowed to 5mph for the rest of the two miles. How long did it take him to get home?
:
From the information given we know:
he ran 8 mph for 2(1/3) = .67 mi
and 5 mph for 2(2/3) = 1.33 mi
:
Write a time equation: time = dist/speed
t = .67%2F8 + 1.33%2F5
t = .08375+ .26667
t = .3542 hrs which is .3542(60) = 21.25 minutes