Question 1193303
<pre>
                  SPEED          TIME              DISTANCE
GOING TO            r            96/r                96
COMING BACK        r-16           96/(r-16)            96
DIFFERENCE                         1
</pre>
{{{96/(r-16)-96/r=1}}}---------solve this for r.



{{{96r-(96(r-16))=r^2-16r}}}

{{{96r-(96r-96*16)=r^2-16r}}}

{{{96r-96r+96*16=r^2-16r}}}

{{{r^2-16r=96*16}}}

-

{{{r(r-16)=96*16}}}

{{{2*48*16}}}
{{{48*32}}}-------these differ by 16.
-
{{{r(r-16)=48*32}}}---------r should equal {{{highlight(highlight(48))}}}.



check:

{{{96/(48-16)-96/48}}}
{{{96/32-2}}}=
{{{3-2}}}
{{{1}}}

check worked.