SOLUTION: In a walkathon to raise money for a charity Elisa walked a certain distance at 5 mi/h and then jogged twice that distance at 8 mi/h. Her total time walking and jogging was 2h and 1

Question 153435: In a walkathon to raise money for a charity Elisa walked a certain distance at 5 mi/h and then jogged twice that distance at 8 mi/h. Her total time walking and jogging was 2h and 15 min. How many miles was the walkathon.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
In a walkathon to raise money for a charity Elisa walked a certain distance at 5 mi/h and then jogged twice that distance at 8 mi/h. Her total time walking and jogging was 2h and 15 min. How many miles was the walkathon.
;
let 3x = miles in the walkathon
then
2x = jogging dist
and
x = walking dist
:
Convert 2 hr 15 min to 2.25 hrs
:
Write a time equation: Time = dist/speed
:
+ = 2.25 hrs
Multiply equation by 40
8x + 5(2x) = 40(2.25)
:
8x + 10x = 90
:
18x = 90
x =
x = 5 mi walking, 10 mi jogging, hence 15 mi is the walkathon
:
:
Check solution:
+
1 + 1.25 = 2.25

RELATED QUESTIONS
In a walkathon to raise money for charity, Elisa walked a certain distance at 5 mi/h and... (answered by fastblue,TP)

In a walkathon to raise money for charity, Elisa walked a certain distance at 5 mi/h and... (answered by scott8148,Adam)

In a walkathon to raise money for charity Alicia walked a certain distance at 5 mi/h and... (answered by CharlesG2)

In a walkathon to raise money for a charity, Elisa walked a certin distance at 5mi/h and... (answered by josmiceli)

I put in this problem before and I forgot to put something in the problem. I was... (answered by orca,scott8148)

I have been working on this math problem for awhile now and I can't figure it out. I was (answered by checkley77)

In a walkathon to raise money for charity, elisa walked a certian distance at 5 mi/h and... (answered by ptaylor)

In a walk-a-thon to raise money for charity, Elisa walked a certain distance at 5 mph and (answered by ankor@dixie-net.com)

In a walk-a-thon to raise money for charity, Elisa walked a certain distance at 5 mph and (answered by stanbon)