Question

Tiffany predicts she will earn 42 dollars from the bake sale. If Tiffany actually earns 24 dollars, what is Tiffany's percent error?

Answer 1

The equation to calculate percent error is # experimental - #theoretical / # theoretical * 100. The experimental value is 24 and the theoretical value is 42. Here's the calculation 24-42/42 * 100 = -42.86 rounded. Hope this helped :))

Answer 2

Answer: 75%

Step-by-step explanation:

Given: The expected income = $42

The actual income = $24

We know that the formula to calculate the percent error is given by :-

$\text{Percent error}=\frac{|\text{Expected amount-Actual amount}|}{\text{Actual amount}}\times100\\\\\Rightarrow\text{Percent error}=\frac{|42-24|}{24}\times100\\\\\Rightarrow\text{Percent error}=\frac{18}{24}\times100=75\%$

Hence,  Tiffany's percent error= 75 %