Solve. -Jill Is 27.5 Kilometers Away from Joe. Both Begin to to Walk

Multiple Choice

Solve.
-Jill is 27.5 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 2.5 kilometers per hour. They meet in 5 hours. How fast is Joe walking?

A) 2.5 kilometers per hour
B) 3 kilometers per hour
C) 5 kilometers per hour
D) 4 kilometers per hour