Solve
-In a Race, Car a Starts 1 Mile Behind $\frac { 1 } { 5 } \mathrm {~min}$

Solve.
-In a race, Car A starts 1 mile behind Car B. Car A is traveling at 50 miles per hour, while Car B is traveling at 45 miles per hour. How long will it take for Car A to overtake Car B?

A) $\frac { 1 } { 5 } \mathrm {~min}$
B) $9 \mathrm {~min}$
C) $54 \mathrm {~min}$
D) $12 \mathrm {~min}$