Problem 8 of 25sta-008
A circle graph shows how 240 students get to school: 45% bus, 30% car, 15% walk and 10% bike. What is the degree measure of the central angle of the walk sector?
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Solution walkthrough1:30
- A circle graph splits one full turn, , among the sectors. All the percents add to .
- Walk is of the students, so its sector takes of .
- of is . Half of that is , which is .
- , so the angle is .
- Traps: is the percent, is how many students walk, and uses .