Question

Determine the unit rate of a marathon runner who travels 5/2 miles in 1/4 hour.

Answer 1

The unit rate is 10mph 

Answer 2

$\bf \cfrac{\frac{5}{2}~miles}{\frac{1}{4}~hr}\implies \cfrac{5~miles}{2}\cdot \cfrac{4}{1~hr}\implies \cfrac{5\cdot 4~miles}{2\cdot 1~hr}\implies \cfrac{20~miles}{2~hr}\\\\\\ 10\frac{miles}{hr}$