Question

a survey asked a random sample students if they estimated they spent more or less than an hour a day on social media.
social media

	more	less	total
8th grade	30	25	55
total	55	51	106

what percent of the 8th - graders estimated they spend less than an hour a day on social media? round your answer to the nearest whole number percent.
answer attempt 1 out of 2

Explanation:

Step1: Identify relevant values

The number of 8th - graders who spend less than an hour on social - media is 25, and the total number of 8th - graders is 55.

Step2: Calculate the percentage

The formula for percentage is $\text{Percentage}=\frac{\text{Part}}{\text{Whole}}\times100\%$. Here, the part is 25 (8th - graders spending less than an hour) and the whole is 55 (total 8th - graders). So, $\text{Percentage}=\frac{25}{55}\times100\%$.
$\frac{25}{55}\times100\%=\frac{2500}{55}\% \approx 45.45\%$.

Step3: Round to the nearest whole number

Rounding 45.45% to the nearest whole number gives 45%.

Answer:

45%