Average Speed Exercise: Solution

Here is the Solution

Step 1: The formula for distance is Distance = Rate × Time
Total distance = 70 × 4 + 55 × 3 = 280 + 165 = 445

Step 2: Total time = 4 + 3 = 7

Step 3: Using the above formula
Average Speed = Total Distance / Total Time = 445 / 7 = 63.57 mph.

Be very carful not to add the speeds and divide by two.
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Date of last modification: 2021