Sandra took 4 tests in math and her mean score was 18. I she scored 18, 22, and 17 in three tests, find Sandra's score in the fourth test.

asked Oct 9, 2022 71.6k views

4 votes

Sandra took 4 tests in math and her mean score was 18. I she scored 18, 22, and

17 in three tests, find Sandra's score in the fourth test.

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4 votes

Answer:

Explanation:

(18+22+17+x)/4=18

18+22+17+x=18×4

57+x=72

x=72-57

x=15

Lqbweb answered Oct 13, 2022

6.1k points

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