Problema Solution
Mariano is taking a math course in which four tests are given. To get a B , a student must average at least80 on four tests. Mariano scored 82, 76, and 78 on the first three tests. What scores on the last test will earn her at least a B?
Answer provided by our tutors
Let 'n' represent the minimum amount needed on the fourth test to get a B. We can write:
(82+76+78+n)/4=80
Using Algebrator to solve for 'n', we get:
n=84