Question 1126655
{{{d/10+d/10.5=1.25}}}

{{{d(10.5+10)=10.5*10*1.25}}}

{{{highlight(d=6.4)}}}


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<pre>
           SPEED       TIME        DISTANCE

X to Y     10          d/10         d

Y to X     10.5        d/10.5       d

TOTAL                 1.25


EQUATION:   {{{d/10+d/10.5=1.25}}}
</pre>