Answer:
r1 = 40km/0.5h = 80 km/h = Stephen's speed.
r2=Cole's speed = 80 + 30 = 110 km/h.
r2 * t = (r1 * t) + 40km
110t = 80t + 40
30t = 40
t = 1.33 h.
D = r*t = 110 * 1.333 = 146.7 km. =
Distance between the 2 towns.
Explanation:
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