Answer:
The percent error in the speeds are 7.1428 %.
Step-by-step explanation:
The percent error of any value is found by,
[tex]error percent = (\frac{|(reading value)-(correct value)|}{correct value})(100)[/tex]
Here, the reading value is 60 mph and the correct value is 56 mph.
Hence inserting this value in above equation, we get
[tex]error percent = (\frac{|(60)-(56)|}{56})(100)[/tex]
[tex]error percent = 7.1428 %[/tex]
Hence, the percent error in the speeds are, 7.1428 %.
