Question

*
1/3 of a certain journey is covered at the rate of 25 km/h,-1/4 at the rate of 30 km/h and the rest of 50 km/h. What is the average speed for the
whole journey?​

Answer 1

Answer:

average speed = 37.5 km/h

Step-by-step explanation:

initial speed = 25 km/h

final speed = 50 km/h

50+25/2 = 75/2 = 37.5 km/h

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