Question

What score must a student make on a science test to have an average score of 92 for the grading period if his other tests scores are 94,96 and 88

Answer 1

To have an average of 92 with four tests, you have to multiply 92 by 4 to find the total score.

$92 \times 4 = 368$

The total score must be 368. Three of the scores are given. Add the three scores and subtract that from 368.

$94+96+88 = 278$

The total of the three scores is 278. The total must be 368. Subtract 278 from 268 to find the missing score.

$368 - 278 = 90$

The student must have a score of 90 to have an average score of 92.