To get an A in a course, you must have an average of at least 90% on four tests worth 100 points each. Your scores so far are 85
, 94, and 84. What must you score on the fourth test to get an A in the course?
1 answer:
Answer:
A score of 117 is needed, which Is not possible since the test is over 100.
Step-by-step explanation:
The other 3 scores are 85, 94,84 . Let's x be the 4th score he must score.
Therefore ( 85 + 94 + 84 + X)/4 =95
Then 263+X /4 =95
Cross mutiplying 4*95=263+X
Therefore X= 380-263
X= 117 which is not possible since the test score is over 100.
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