Karen wants to get an average of 92% at the end of the semester in
MATHEMATICS
SAT 2021
Karen wants to get an average of 92% at the end of the semester in her class. She has 1 test left to take before the semester is over to raise her average. If she recieved an 88%, 87%, 95%, and 93% on her tests what does she need to recieve on her last test to obtain the 92% average?
- A. 95%
- B. 93%
- C. 97%
- D. 100%
Correct Answer: C. 97%
Explanation
For this question we need to set up an equation to find the mean, set it equal to our desired mean of 92 and solve for our missing test value. (93+88+87+95+x)/5=92 From here we perform algebraic procedures to simplify the equation (363+x)/5=92 363+x=460 x=97
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *