Using the principle of linear approximation, the approximate average speed of the person in miles per hour is 70.59
Using linear approximation :
Average speed = (1 ÷ 51) = 0.0196078 mi/sec
Expressing the average speed in miles per hour :
0.0196078 mi/sec = (0.0196078 × 3600) mi/hr = 70.588 mi/hr
Therefore, the approximate average speed is 70.59 mi/hr
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