Question

To get a B in​ math, Alexandria Pappas must average 80 on five tests. Scores on the first four tests were 80​, 73​, 81​, and 75. What is the lowest score that she can get on the last test and still get a​ B?

Answer 1

Answer with explanation:

→→To get grade B, Average of Alexandria should be equal to 80.

 Score of first four tests of Alexandria are : 80, 73, 81, and 75.

Let Marks obtained in fifth test = x

Mean or Average

      $=\frac{\text{Sum of all the Observation}}{\text{Total number of Observation}}\\\\80=\frac{80+73+81+75+x}{5}\\\\400=309+x\\\\400-309=x\\\\x=91$

Lowest score that Alexandria should score that she can get on the last test and still get a​ B =91