SOLUTION: There are four math tests. Roger's average score on those 4 tests was 80 out of 100. Two of his test scores are 65 and 70. What is the lowest that either one of his scores could ha

Question 759351: There are four math tests. Roger's average score on those 4 tests was 80 out of 100. Two of his test scores are 65 and 70. What is the lowest that either one of his scores could have beeen?
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
Average = 80 = S/4 where S = the sum of the 4 scores
S = 320
Two of the scores are 65 and 70, so S = s1 + s2 + 65 + 70 = 320
s1 + s2 = 320 - 135 = 185
Since the maximum possible score for s1 or s2 is 100, that leaves 85 as the lowest possible score for the other test.
Ans: 85
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