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16 December, 01:53

Joseph drives 25miles North in 15 minutes then he drives 40 miles east in 30 minutes, then he uses cruise control option for 1 hour and covers 70 miles on the highway and finally drives 15 miles in 15 minutes. What was his average speed?

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  1. 16 December, 04:34
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    Answer: 1.25 miles per minute

    Explanation:

    Average speed is the rate of change of total distance covered per unit time.

    i. e Average speed = (Total distance / Time taken)

    Total distance covered = (25miles + 40 miles + 70 miles + 15 miles)

    = 150 miles

    Total time taken = (15 minutes + 30 minutes + 1 hour + 15 minutes) = 120 minutes

    Since 60 minutes = 1 hour, the total time taken is 120 minutes

    Now, apply Average speed = (Total distance / Time taken)

    = (150 miles / 120 minutes)

    = 1.25 miles per minutes

    Thus, Joseph drove with an average speed of 1.25 miles per minute.
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