Question 759351
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