Question 1200263
<pre>
                      SPEED       TIME            DIST.
GOING                   r         1500/r          1500
RETURN                 1.2r       1500/(1.2r)     1500
TOTAL                             7&1/3
</pre>
Solve for r:
{{{1500/r+1500/(1.2r)=7&1/3}}}

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