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Speed of X = 0 km/h
Speed of Y = 120/15 = 8 km/h
Speed of Z = 180/15 = 12 km/h
Uniform speed between X and Y = 8 km/h
Uniform speed between Y and Z = 4 km/h
Answered by
21
Step-by-step explanation:
8km/h
4km/h
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