Jim Drove 252 Miles $1 \frac { 1 } { 2 }$

Multiple Choice

Jim drove 252 miles. Jim's brother made the same trip at a speed 14 miles per hour slower than Jim did and required an extra $1 \frac { 1 } { 2 }$ hours. Find Jim's rate and time.

A) $\quad 56 \mathrm { mph } , 3.5 \mathrm { hr }$
B) $\quad 72 \mathrm { mph } , 4.5 \mathrm { hr }$
C) $\quad 72 \mathrm { mph } , 3.5 \mathrm { hr }$
D) $\quad 56 \mathrm { mph } , 4.5 \mathrm { hr }$
E) not possible