Problema Solution
Math question: A student averages 84 on five tests. If the student received grades of 84, 82, 81, and 79 on the first four exams, what grade did the student receive on the fifth exam?
Answer provided by our tutors
average is the sum divided by the total amount of numbers
(84+82+81+79+x)/5 = 84
326+x = 84*5
326+x = 420
x = 94
the student received a 94 on the fifth exam