If the answer in the picture didn’t work, you can do this instead
96/x=1 1/2/2 1/2
Cross multiply
1 1/2x= 96 * 2 1/2
Convert the equation
3/2x= 96*2*1/2
Cancel out the 2’s which is the greatest common factor
3/2x=96
Multiply both sides by 2/3
X= 64 miles