Bens test grades this term is 85,92,95 he wants a test average of at least 90 this term and he has to take one more test what is the lowest score to get an average of. 90
To get an average of 90, Ben will need to have a total score of:
(85 + 92 + 95 + x) / 4 = 90
Multiplying both sides by 4:
85 + 92 + 95 + x = 360
Simplifying:
x = 88
So Ben will need to get at least an 88 on his next test to achieve an average of 90 for the term.
To find out the lowest score Ben needs on his final test to achieve an average of at least 90, we can follow these steps:
1. Calculate the sum of Ben's current test grades (85 + 92 + 95):
Total = 85 + 92 + 95 = 272
2. Determine the number of tests Ben has taken so far (3).
3. Determine the number of tests Ben will have taken after his final test (3 + 1 = 4).
4. Calculate the minimum total sum of scores Ben needs to achieve an average of 90:
Minimum total = Average × Number of tests
Minimum total = 90 × 4 = 360
5. Calculate the score Ben needs on his final test to reach the minimum total:
Final test score = Minimum total - Total
Final test score = 360 - 272 = 88
Therefore, Ben needs to score at least 88 on his final test to achieve an average of 90 or higher this term.