The percent error can be calculated using the formula:
Percent Error = (|Measured Value - Actual Value| / Actual Value) * 100
In this case, the measured value is 60 pounds and the actual value is 75 pounds.
Percent Error = (|60 - 75| / 75) * 100
= (15 / 75) * 100
= 0.2 * 100
= 20
Therefore, the percent error is 20%.