Problema Solution
The average of Paula’s two test scores must be 80 or more for her to get at least a B in the class. She
got a 72 on her first test. What grades can she get on the second test to make at least a B in the class?
Answer provided by our tutors
Let 'x' represent the grade Paula must score in order to at least obtain a 'B':
(72+x)/2 = 80
x=88
So Paula must score at least an 88 on the second test in order to obtain a "B' in the class.