Question

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last thursday was costume day at karens school. 40% of the 450 students wore a costume. how many students wore a costume?
students
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Explanation:

Step1: Convert percentage to decimal

To find 40% of 450, first convert 40% to a decimal. 40% is equivalent to $0.4$ (since $40\%=\frac{40}{100} = 0.4$).

Step2: Multiply by total number of students

Now, multiply this decimal by the total number of students (450). So, we calculate $450\times0.4$.
$450\times0.4 = 180$.

Answer:

180