Final answer:
To calculate the percent error in the carpenter's estimate for the trim boards, use the formula: Percent Error = (|estimated value - actual value| / actual value) * 100
Step-by-step explanation:
To calculate the percent error in the carpenter's estimate for the trim boards, we need to compare the estimated value to the actual value and calculate the difference as a percentage. Let's assume the estimated value for the trim boards is x and the actual value is y. The percent error formula is given by:
Percent Error = (|x - y| / y) * 100
Substituting the given values into the formula, we can calculate the percent error:
Percent Error = (|x - y| / y) * 100