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SAT Math: Solving for x to Identify a Class Average 0 Views
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Description:
A teacher is grading science tests for a class of 20 students. Each student can score between 0 and 100. If the average score of the first 12 students' tests is 65, what is the lowest possible score that the 13th student's test can receive in order for the 20 students to reach a class average of 75?
A teacher is grading science tests for a class of 20 students. Each student can score between 0 and 100. If the average score of the first 12 students' tests is 65, what is the lowest possible score that the 13th student's test can receive in order for the 20 students to reach a class average of 75?
Transcript
- 00:00
Yeah Subtract seven eighty from both sides That gets us
- 02:03
just twenty over here Then we have x is greater
- 02:06
than or equal to twenty lowest possible score that still
- 02:09
allows for class average above seventy five is a twenty
- 02:12
I probably would have been me in there Obviously we
Full Transcript
- 02:14
want everyone to do well on this test To get
- 02:17
that grade above a twenty may we humbly recommend a 00:02:20.1 --> [endTime] bit more shmoop times
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