Solve the Problem $9 \mathrm{mph}$ , and Rachael Walks at a Speed Of

Multiple Choice

Solve the problem.
-Rachael's bike got a flat tire and she must walk the rest of the way to work. The bike was being ridden at $9 \mathrm{mph}$ , and Rachael walks at a speed of $4 \mathrm{mph}$ . The distanœ from home to work is $22 \mathrm{mi}$ , and the total time for the trip was $3 \mathrm{hr}$ . How far did she have to walk?

A) $1 \mathrm{mi}$
B) $18 \mathrm{mi}$
C) $2 \mathrm{mi}$
D) $4 \mathrm{mi}$