tommy went to the store to buy paint for his room. he was expecting to pay $32, but it was more expensive…
tommy went to the store to buy paint for his room. he was expecting to pay $32, but it was more expensive than he estimated. he bought all the paint for $40. what is the percent error in tommys estimate? %
Answer
Explanation:
Step1: Find the absolute error
The absolute error is the difference between the actual value and the estimated value. So, ( |40 - 32| = 8 ).
Step2: Use the percent error formula
The formula for percent error is ( \text{Percent Error} = \frac{\text{Absolute Error}}{\text{Actual Value}} \times 100% ). Substitute the values: ( \frac{8}{40} \times 100% ).
Step3: Calculate the result
( \frac{8}{40} = 0.2 ), and ( 0.2 \times 100% = 20% ).
Answer:
20