, and your first four quiz grades are 84,62,59, and 73 . What minimum grade do you need on quiz 5 in order to get a quiz average of 70 or better

Question

asked Jan 28, 2024 82.3k views

1 Answer

Sumit Kumar Saha · Answer 1 · 2024-02-03T11:24:48+0000

To get a quiz average of 70 or better, you need a minimum grade of 72 on quiz 5.

To find the minimum grade needed on quiz 5 to get a quiz average of 70 or better, we can use the formula:

Minimum grade = (required average × total number of quizzes) - sum of grades on previous quizzes

Let's plug in the given values:

Total number of quizzes = 5

Required average = 70

Sum of grades on previous quizzes = 84 + 62 + 59 + 73 = 278

Now, let's calculate the minimum grade:

Minimum grade = (70 × 5) - 278

Minimum grade = 350 - 278

Minimum grade = 72

Therefore, the minimum grade needed on quiz 5 to get a quiz average of 70 or better is 72.