Question 1153492
<pre>
Same distance d up and down

              SPEED          TIME      DISTANCE

UP             2.90           d/2.9      d

DOWN           4.90           d/4.9      d

TOTAL                         8
</pre>
The question asks for 2d.


{{{highlight_green(d/2.9+d/4.9=8)}}}


{{{4.9d+2.9d=8*4.9*2.9}}}

{{{7.8d=8*4.9*2.9}}}

{{{d=(8*4.9*2.9)/7.8}}}

{{{highlight(2d=2((8*4.9*2.9)/7.8))}}}------compute this.



29.1 miles, total trip