Question

Hurry please, 20 points

Manuel has scored 77, 76, 84, 62, and 81 on his previous five tests. What score does he need on his next test so that his average (mean) is 77?

Answer 1

9514 1404 393

Answer:

82

Explanation:

The differences between the current scores and the desired mean are ...

0, -1, +7, -15, +4

for a total of -5.

To achieve a mean of 77 after his next test, Manuel needs to bring the total of differences to 0. That is, he must score 5 points above that mean: 77 + 5 = 82.

Manuel needs a score of 82.