document.write( "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? \n" ); document.write( "
Algebra.Com's Answer #461985 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! Average = 80 = S/4 where S = the sum of the 4 scores \n" ); document.write( "S = 320 \n" ); document.write( "Two of the scores are 65 and 70, so S = s1 + s2 + 65 + 70 = 320 \n" ); document.write( "s1 + s2 = 320 - 135 = 185 \n" ); document.write( "Since the maximum possible score for s1 or s2 is 100, that leaves 85 as the lowest possible score for the other test. \n" ); document.write( "Ans: 85 \n" ); document.write( " |