Solve the Problem $t \sqrt { 68 }$ Miles
B) $2 \mathrm { t } \sqrt { 13 }$

Multiple Choice

Solve the problem.
-A motorcycle and a car leave an intersection at the same time. The motorcycle heads north at an average speed of 20 miles per hour, while the car heads east at an average speed of 48 miles per hour. Find an expression for their distance apart in miles at the end of thours.

A) $t \sqrt { 68 }$ miles
B) $2 \mathrm { t } \sqrt { 13 }$ miles
C) $52 \mathrm { t }$ miles
D) $52 \sqrt { t }$ miles