Home > CCAA > Chapter 9 Unit 10 > Lesson CC3: 9.2.4 > Problem9-120

9-120.

Dawn drove $420$ miles in $6$ hours on a rural interstate highway. If she maintains the same speed, how far can she go in $7.5$ hours?

Since Dawn will maintain the same speed, we can find the equivalent fraction for $7.5$ hours to solve for the distance.

$\frac{\text{miles}}{\text{hour}} = \frac{420}{6} = \frac{\it x}{7.5}$

$70 = \frac{\it x}{70}$

$x = 525$ miles