Question 1194493
<pre>
                   SPEED         TIME          DISTANCE

BIKING             15            d/15           d

DRIVING            45            d/45           d

TOTAL                             8
</pre>
{{{highlight_green(d/15+d/45=8)}}}


{{{LCD_is_45}}}


{{{3d+d=8*45}}}

{{{4d=2*4*45}}}

{{{highlight(d=90)}}}