Question 1129136
<pre>
                SPEED            TIME           DISTANCE

BIKE            14               8-x             14(8-x)

WALK             2               x                2x

TOTALS                           8                52
</pre>

{{{14(8-x)+2x=52}}}

-

{{{112-14x+2x=52}}}

{{{-12x+112=52}}}

{{{112-52=12x}}}

{{{12x=60}}}

{{{x=5}}}

Bike for 3 hours, walk for 5 hours