Solve the Problem $256 \mathrm{~km}$ At an Average Rate Of $64 \mathrm{~km} / \mathrm{hr}$

Multiple Choice

Solve the problem.
-Jay drove $256 \mathrm{~km}$ at an average rate of $64 \mathrm{~km} / \mathrm{hr}$ . How long did the trip take?

A) $5 \mathrm{hr}$
B) $4 \mathrm{hr}$
C) $3 \mathrm{hr}$
D) $\frac{1}{4} \mathrm{hr}$