Question 154040
Let x be the distance she walked,
then the distance she jogged is 2x.
The time walking was {{{x/5}}}
The time jogging was {{{2x/8}}}
The total time is {{{x/5+(2x)/8}}}
As the total time is 2 hours and 15 minutes, we have
{{{x/5+(2x)/8=2+1/4}}}
Solving for x, we have
{{{x/5+x/4=9/4}}}
{{{20(x/5+x/4)=20*(9/4)}}}     (multiply both sides by 20)
{{{4x+5x=45}}}
{{{9x = 45}}}
{{{x=5}}}
So 
the distance she walked is 5 miles
the distance she jogged is 10 miles.