Substitute to Find the Value of the Expression $\frac { 2673 } { t }$

Substitute to find the value of the expression.
-A train must cover a distance of 2673 miles. The velocity, in miles per hour, of the train is $\frac { 2673 } { t }$ where $t$ is the time, in hours, to complete the trip. If the train completes the trip in 27 hours, what is its velocity?

A) $94 \mathrm { mph }$
B) $99 \mathrm { mph }$
C) $0.01 \mathrm { mph }$
D) $72,171 \mathrm { mph }$