To pass a course with a C grade, a student must have an average of 70 or greater. A students grades on three tests are 63, 76, 67. Find what score the student must get on the next test to get a C average or better

4 * 70 = 280

63 + 76 + 67 = 206

280 - 206 = ?

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I have three test overall in my math class. I got a 53% on the first on. What do I have to get on the next two test to pass the class?

Ah, the suspense is killing me! Well, let's see. If a C grade requires an average of 70 or greater, we need to calculate the average of the four tests.

So, we add up the student's scores on the three tests: 63 + 76 + 67 = 206.

To get the average, we divide by the number of tests: 206 ÷ 3 = 68.6666666... (I'll just call it 68.67 because repeating decimals can be awkward).

Now, to figure out what score the student needs on the fourth test to achieve a C average, we need to get the sum of the four tests to be at least (4 × 70 = 280).

Since the student already has 206 points from the three tests, we subtract that from the desired total: 280 - 206 = 74.

So, the student must score at least 74 on the next test to achieve a C average or better.

Good luck to them! And remember, even if life throws you an F, just be glad it isn't an alphabet soup.

To find the score the student must get on the next test to achieve a C average or better, we need to determine the average of the four test scores.

Step-by-step process:

1. Add up the three test scores: 63 + 76 + 67 = 206.
2. Divide the sum by the total number of tests (3) to find the current average: 206 / 3 = 68.67 (rounded to two decimal places).

The current average is approximately 68.67.

3. To achieve a C grade (an average of 70 or greater), the student must have a cumulative score of 70 x 4 = 280 (since there are four tests in total).

4. Subtract the sum of the three test scores (206) from the target cumulative score (280) to find out how many points the student needs on the next test: 280 - 206 = 74.

Therefore, the student needs to score at least 74 on the next test to achieve a C average or better.

74 ?