Question

approximately what percentage of students worked more than 21 hours per week? round each term to the nearest whole percent before calculating your answer. the percentage of students who worked at least 21 hours per week is approximately \boxed{}%. the pie chart (labels: 21-34 hours 20.7%, 35 or more hours 18.2%, 1-20 hours 36%, did not work 25.1%) represents a survey of undergraduates (ages 22 or younger) enrolled in college in the 2003-2004 school year, showing hours per week worked by college students.

Explanation:

Step1: Identify relevant categories

The categories for working at least 21 hours are "21 - 34 hours" (20.7%) and "35 or more hours" (18.2%).

Step2: Add the percentages

To find the total percentage, add the two percentages: $20.7\% + 18.2\% = 38.9\%$.

Step3: Round to nearest whole number

Rounding 38.9% to the nearest whole number gives 39%.

Answer:

39