SOLUTION: In a walkathon to raise money for a charity, Elisa walked a certin distance at 5mi/h and then jogged twice that distance at 8mi/h. Her total time walking and jogging was 2 h and 15

Question 214179: In a walkathon to raise money for a charity, Elisa walked a certin distance at 5mi/h and then jogged twice that distance at 8mi/h. Her total time walking and jogging was 2 h and 15 min. How many miles long was the walkathon? ( hint: time equals distance over rate.)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
I would write 2 equations, 1 for
jogging and 1 for walking

----------------------
given:
mi/hr
mi/hr

hrs
------------------------
Now rewrite the equations

and

Substituting:

hr
And, since

mi
And, since

mi
The walkathon was mi
check:

hr
and

OK

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