To find out how many miles Alana rode, we can set up the equation based on the information given. If Zoe rode 68 miles and that is 4 times as many miles as Alana rode, we can express Alana's mileage, \( m \), as follows:
\[ 68 = 4 \times m \]
To solve for \( m \), we divide both sides by 4:
\[ m = \frac{68}{4} \]
Calculating this gives:
\[ m = 17 \]
Thus, the correct sentence is:
68 ÷ 4 = 17 ; m = 17