Question 1158942
Jeff bicycles 120 miles at the rate of r mph. The same trip would have taken 5 hours longer if he had decreased his speed by 4 mph. Find r.

I thought it would be 120/(r-4)-120r=5. It doesn't make sense when I work it out
<pre>Doesn't make sense because you should've had: {{{matrix(1,7, 12/(r - 4) - 120/r, "=", 5, "i/o", 120/(r - 4) - 120r, "=", 5))}}}