Jon's test grades are 76,84,83 and 78.What does he need to make on his next test to have an 83 average?
83 * 5 = 415
415 - (76 + 84 + 83 + 78) = ?
415-321=94
To find out what Jon needs to make on his next test to have an 83 average, follow these steps:
Step 1: Calculate the sum of Jon's current test grades.
76 + 84 + 83 + 78 = 321
Step 2: Calculate the number of tests Jon has taken.
Jon has taken 4 tests.
Step 3: Calculate the average of Jon's current test grades.
321 / 4 = 80.25
Step 4: Calculate the score Jon needs on his next test to have an average of 83.
Let x be the score Jon needs on his next test.
(321 + x) / (4 + 1) = 83
Step 5: Solve for x.
321 + x = 83 * 5
321 + x = 415
x = 415 - 321
x = 94
Therefore, Jon needs to make at least 94 on his next test to have an 83 average.
To find out what Jon needs to make on his next test to have an 83 average, we can use the formula for calculating the average:
Average = Sum of all scores / Number of scores
Since Jon has already taken 4 tests, the sum of his scores is 76 + 84 + 83 + 78 = 321.
To find out what Jon needs to make on his next test, we need to solve the following equation:
(321 + x) / 5 = 83
Where x represents the score Jon needs to make on his next test.
To solve for x, we can first multiply both sides of the equation by 5 to get rid of the denominator:
321 + x = 83 * 5
Next, we can simplify the right side of the equation:
321 + x = 415
Now, we can isolate x by subtracting 321 from both sides of the equation:
x = 415 - 321
After performing the subtraction, we find that:
x = 94
Therefore, Jon needs to make a score of 94 on his next test to have an 83 average.