To find the percent error, you can use the formula:
\[ \text{Percent Error} = \left( \frac{|\text{Actual Value} - \text{Estimated Value}|}{\text{Actual Value}} \right) \times 100 \]
In this case:
- Actual Value = 75 pounds (actual weight of Sam)
- Estimated Value = 60 pounds (Krisha's belief about Sam's weight)
Now, substitute the values into the formula:
\[ \text{Percent Error} = \left( \frac{|75 - 60|}{75} \right) \times 100 \]
Calculating the absolute difference:
\[ |75 - 60| = 15 \]
Now, divide by the actual value and multiply by 100:
\[ \text{Percent Error} = \left( \frac{15}{75} \right) \times 100 \]
\[ \text{Percent Error} = 0.2 \times 100 = 20% \]
So, the percent error is 20%.