A car takes 2¼ hours to travel 200 km along a main road and ¾ hour to travel 25 km along a side road. What is the average speed of the car for the whole journey?
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Answer:
To find the average speed of the car for the whole journey, we need to calculate the total distance traveled and the total time taken.
Total distance = 200 km + 25 km = 225 km
Total time = 2¼ hours + ¾ hour = 3 hours
Average speed = Total distance ÷ Total time
= 225 km ÷ 3 hours
= 75 km/hour
Therefore, the average speed of the car for the whole journey is 75 km/hour.
Answer:
To find the average speed of the car for the whole journey, we need to use the formula:
Average speed = Total distance ÷ Total time
First, let's calculate the total distance traveled by the car:
Total distance = Distance traveled along the main road + Distance traveled along the side road Total distance = 200 km + 25 km Total distance = 225 km
Next, let's calculate the total time taken by the car:
Total time = Time taken along the main road + Time taken along the side road Total time = 2¼ hours + ¾ hour Total time = 3 hours
Now, we can use the formula to find the average speed:
Average speed = Total distance ÷ Total time Average speed = 225 km ÷ 3 hours Average speed = 75 km/h
Therefore, the average speed of the car for the whole journey is 75 km/h.