Wyatt jogged to his friend's house 29.25 miles away and then got a ride back home. It took him 3 hours longer to jog there than ride back. His jogging rate was 13 mph slower than the rate when he was riding. What was his jogging rate?

Respuesta :

Given:

Wyatt jogged to his friend's house 29.25 miles away and then got a ride back home.

It took him 3 hours longer to jog there than ride back.

His jogging rate was 13 mph slower than the rate when he was riding.

Required:

To find the jogging rate.

Explanation:

Assume his jogging rate is x mph.

[tex]\frac{29.25}{x}-\frac{29.25}{x+13}=3[/tex][tex]\begin{gathered} \frac{9.75}{x}-\frac{9.75}{x+13}=1 \\ \\ 9.75(x+13)-9.75x=x(x+13) \\ \\ 9.75x+126.75-9.75x=x^2+13x \\ \\ x^2+13x-126.75=0 \end{gathered}[/tex]

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