Question 1124458
<pre>
                   SPEED      TIME          DISTANCE

Clara               60         d/60          d

John                70         d/70          d

Difference                      1.2
</pre>

{{{d/60-d/70=1.2}}}, and after finding d, evaluate {{{d/70}}}.

-

{{{d/6-d/7=12}}}

{{{d(1/6-1/7)=12}}}

{{{d(7-6)/42=12}}}

{{{d/42=12}}}

{{{d=12*42}}}
-

{{{d/70=(12*42)/70=(2*2*3*6*7)/(2*5*7)}}}

{{{(2*3*6)/5}}}

{{{36/5}}}

{{{highlight(7&1/5)}}}-------------choice E.