ttsosmart2020 ttsosmart2020 03-07-2020 Mathematics contestada Jill is 18 kilometers away from Joe. Both begin to walk toward each other at the same time. Jill walks at 3 kilometers per hour. They meet in 4 hours. How fast is Joe walking? O A 3.5 km/h OB 3 km/hr Oc 1.5 km/hr 2.5 km/hr