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Answer :
Sure! Let's work through this problem step-by-step:
1. Understand the Situation: Liliana surveyed 20 seventh-grade students to find out how many hours they spend on their computers each week. She recorded the number of hours for each student.
2. Identify the Task: We need to find the ratio of the total number of students who used their computers to the total number of students surveyed.
3. List the Hours Spent:
- The recorded hours are: 8, 15, 0, 11, 12, 13, 16, 13, 0, 4, 17, 14, 30, 13, 5, 12, 1, 13, 12, 21.
4. Identify the Total Number of Students Surveyed:
- There are 20 students in total, as stated in the problem.
5. Count the Students Using Computers:
- We need to count how many students spent more than 0 hours on their computers. Looking through the list, there are 18 students who reported using their computers for more than 0 hours.
6. Calculate the Ratio:
- To find the ratio of students who used their computers to those surveyed, we divide the number of students who used computers (18) by the total number of students surveyed (20).
- The ratio is therefore [tex]\( \frac{18}{20} \)[/tex].
7. Simplify the Ratio:
- Simplifying [tex]\( \frac{18}{20} \)[/tex] gives us [tex]\( \frac{9}{10} \)[/tex].
Therefore, the ratio of the total number of students who used their computers to the total number of students surveyed is [tex]\( \frac{9}{10} \)[/tex].
1. Understand the Situation: Liliana surveyed 20 seventh-grade students to find out how many hours they spend on their computers each week. She recorded the number of hours for each student.
2. Identify the Task: We need to find the ratio of the total number of students who used their computers to the total number of students surveyed.
3. List the Hours Spent:
- The recorded hours are: 8, 15, 0, 11, 12, 13, 16, 13, 0, 4, 17, 14, 30, 13, 5, 12, 1, 13, 12, 21.
4. Identify the Total Number of Students Surveyed:
- There are 20 students in total, as stated in the problem.
5. Count the Students Using Computers:
- We need to count how many students spent more than 0 hours on their computers. Looking through the list, there are 18 students who reported using their computers for more than 0 hours.
6. Calculate the Ratio:
- To find the ratio of students who used their computers to those surveyed, we divide the number of students who used computers (18) by the total number of students surveyed (20).
- The ratio is therefore [tex]\( \frac{18}{20} \)[/tex].
7. Simplify the Ratio:
- Simplifying [tex]\( \frac{18}{20} \)[/tex] gives us [tex]\( \frac{9}{10} \)[/tex].
Therefore, the ratio of the total number of students who used their computers to the total number of students surveyed is [tex]\( \frac{9}{10} \)[/tex].
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