Question

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

Answer 1

• How fast is Joe walking ?

v(Joe) = 1.5km/h

Explanation:

v = d/t => d = v·t

Jill

d = 3km/h·4h = 12 km

Joe

d = 18km - 12km = 6km

v = d/t = 6km/4h = 1.5 km/h