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To find the percent error, we need to calculate the difference between the estimated amount ($30) and the actual amount spent ($19.75) and then divide it by the estimated amount. Let's calculate it step by step:
1. Calculate the difference:
Estimated amount - Actual amount = $30 - $19.75 = $10.25
2. Calculate the percent error by dividing the difference by the estimated amount and multiply it by 100:
Percent error = (Difference / Estimated amount) x 100 = ($10.25 / $30) x 100 ≈ 34.17
Rounding the answer to the nearest whole number, the percent error in her production would be approximately 34%.