PSAT/NMSQT
PSAT Math Test - No Calculator Section
Survey on Homework Hours
Very Hard Problem Solving And Data Analysis Data Interpretation
A research team conducted a survey to analyze the average number of hours high school students spend on homework per week. The survey was distributed to 120 students across five different schools, categorized by grade level. The data collected is summarized in the table below:
| Grade | 0-5 hours | 6-10 hours | 11-15 hours | 16+ hours |
|---|---|---|---|---|
| 9th | 15 | 30 | 25 | 10 |
| 10th | 20 | 25 | 15 | 5 |
| 11th | 10 | 20 | 15 | 5 |
| 12th | 5 | 8 | 10 | 2 |
Using the data provided, calculate the total percentage of surveyed students who reported spending more than 10 hours on homework per week. Input your answer as a fraction in its simplest form.
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