Sarah has an 86% average on her 1st 5 tests. If she gets a 92 on her next test, what will her average be then?

86 * 5 = 430

430 + 92 = 522

522 / 6 = 87

To find out Sarah's average after her next test, you need to determine the total average score considering all the tests so far.

First, let's calculate the total score Sarah has obtained on her first 5 tests. Since her average is 86%, we can assume that each test is equally weighted:

Total score on the first 5 tests = Average score * Number of tests
= 86% * 5
= 0.86 * 5 (converting the percentage to a decimal)
= 4.3

Now, let's calculate the total score Sarah will have after her next test. Assuming all the tests are equally weighted:

Total score after the next test = Total score on the first 5 tests + Score on the next test
= 4.3 + 92
= 96.3

To find the new average, divide the total score after the next test by the total number of tests:

New Average = Total score after the next test / Total number of tests
= 96.3 / 6 (since Sarah has taken 5 tests so far and will have 6 tests after the next one)
≈ 16.05

Therefore, Sarah's average after her next test will be approximately 16.05.