Question

the price of a cell phone was reduced from $450 to $225. by what percentage was the price of the cell phone reduced?
a 25%
b 30%
c 50%
d 15%

Explanation:

Step1: Calculate the amount of reduction

The original price is \( \$450 \) and the new price is \( \$225 \). The amount of reduction is \( 450 - 225=\$225 \).

Step2: Calculate the percentage reduction

The formula for percentage reduction is \( \frac{\text{Amount of reduction}}{\text{Original price}}\times100\% \). Substitute the values: \( \frac{225}{450}\times 100\% \).
Since \( \frac{225}{450}=\frac{1}{2} = 0.5 \), then \( 0.5\times100\% = 50\% \).

Answer:

C. 50%