Question

In math class, a student has an average grade of 85% for five tests so far. What grade must that student earn on the next test to reach an average grade of 90% for all six tests?

Answer 1

Total marks for five tests = 85 * 5 = 425

Total marks in six tests with 90% would be: 90 * 6 = 540

So, the remaining marks will be: 540-425 = 115

Student must earn 115 grade in order to reach other average score of 90%

Hope this helps!