Problem
QUESTION 7 Solve. Sales of frozen pizza for a club fund-raiser increased from 500 one year to 700 the next year. What was the percent of increase? \( 40 \% \) \( 71.4 \% \) \( 60 \% \) \( 28.6 \% \)
Solution
Step 1 ：\( \% \text{ increase} = \frac{\text{change}}{\text{original}} \times 100 \)
Step 2 ：\( \% \text{ increase} = \frac{700 - 500}{500} \times 100 \)
Step 3 ：\( \% \text{ increase} = 40 \% \)
