## Algebra 2 (1st Edition)

$75$ minutes running and $80$ minutes cycling.
Let $x$ be the time spent running. Then the time spent cycling is $\frac{155}{60}-x$. Then our equation is: $12x+(\frac{155}{60}-x)30=55\\12x+77.5-30x=55\\18x=22.5\\x=1.25$. Thus she spent $75$ minutes running and $80$ minutes cycling.