Question

at the beginning of summer, sam could swim 12 laps. now, he can swim 15 laps. what is the percent change in the number of laps sam can swim? ?%

Explanation:

Step1: Find the change in laps

Subtract the initial laps from the new laps: $15 - 12 = 3$

Step2: Calculate percent change

Use the formula $\text{Percent Change} = \frac{\text{Change}}{\text{Original}} \times 100\%$. So, $\frac{3}{12} \times 100\% = 0.25 \times 100\% = 25\%$

Answer:

25