Question

Kevin will take 4 math tests this term. All of tests are worth the same number of points. After taking the first 3 tests, his mean test score is 88 points. How many points does he need on his last test to raise his mean test score to 90 points?

Answer 1

360 points in total, Kevin needs 96 more.

Explanation:

88 x 3 is 264

To get a mean of 90, Kevin needs 360 points in total because 90 x the 4 tests is 360.

360 - 264 is 96

so he needs 96 more points.