If Joe received a 90,100,85, and 97 on his first four exams, what would he
MATHEMATICS
SAT 2021
If Joe received a 90,100,85, and 97 on his first four exams, what would he need to get on the final exam in order to finish with an average of 94?
- A. 95
- B. 98
- C. 95
- D. 94
Correct Answer: D. 94
Explanation
The equation to find the average of his five grades would look like (90+100+85+97+x)/5=94. You must solve for x, so the first step is to multiple both sides by 5 to get 90+100+85+97+x=470. Then you subtract all of the other grades from the total of 470 to get a final answer of 98 for the grade of the final exam
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