Question 984394
<font face="Times New Roman" size="+2">


Let *[tex \Large r] represent the walking speed.  Then *[tex \Large 2r] represents the bicycling speed.  The time he spent walking is the distance walked divided by the walking speed, or *[tex \Large \frac{5}{r}].  Similarly, the time spent bicycling is *[tex \Large \frac{14}{2r}], which reduces to *[tex \Large \frac{7}{r}].  The sum of these two times is 3 hours, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{5}{r}\ +\ \frac{7}{r}\ =\ 3]


Solve for *[tex \Large r]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \