Solve the problem.Jill is 13.5 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 3 hours. How fast is Joe walking?
A. 4 kilometers per hour
B. 2.5 kilometers per hour
C. 3 kilometers per hour
D. 2 kilometers per hour
Answer: D
Mathematics
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