SOLUTION: Max scored 71 and 65 on his first two tests in Biology 101. What is the lowest he must score on the third test to get an average for the three tests above 77?

Algebra ->  Inequalities -> SOLUTION: Max scored 71 and 65 on his first two tests in Biology 101. What is the lowest he must score on the third test to get an average for the three tests above 77?      Log On


   



Question 1127269: Max scored 71 and 65 on his first two tests in Biology 101. What is the lowest he must score on the third test to get an average for the three tests above 77?
Found 2 solutions by math_helper, ikleyn:
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!

+%2871+%2B+65+%2B+x%29+%2F+3++%3E+77+
++%28136+%2B+x%29+%2F+3+%3E+77+
++x+%2B+136+%3E+231+
++highlight%28+x+%3E+95+%29+

Max must score ABOVE 95 on the third test in order to raise his average to a value above 77.


Answer by ikleyn(52777) About Me  (Show Source):
You can put this solution on YOUR website!
.
%2871+%2B+65+%2B+x%29%2F3 > 77  ====>


71 + 65 + x > 3*77 = 231  ====>


x > 231 - 71 - 65 = 95.


Answer.  To get an average for the three tests above 77, Max must have the lowest of 96 on the third test.