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Let's find the percent error using the formula: percent error = (|actual value - estimated value| / actual value) * 100
actual value = 75 pounds
estimated value = 60 pounds
percent error = (|75 - 60| / 75) * 100
percent error = (15 / 75) * 100
percent error = (0.2) * 100
percent error = 20%
The percent error is 20%.