many graduate schools require applicants to take a certain test those taking the test received three scores a verbal reasoning score a quantitative reasoning score and an analytical writing score in 2013 the average quantitative reasoning score exceeded the average verbal reasoning score by 1.1 points and the average verbal reasoning score exceeded the analytical writing score by 143.2 points the sum of the three average scores was 315.1 what was the average score for each category

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mariacsinning mariacsinning · Answer 1 · 2020-06-04T03:03:46+02:00

Answer:

The average verbal reasoning score: 152.4

The average quantitative reasoning score: 153.5

The analytical writing score: 9.2

Step-by-step explanation:

Let's call A the average verbal reasoning score, B the average quantitative reasoning score and C the analytical writing score.

Then, if the average quantitative reasoning score exceeded the average verbal reasoning score by 1.1 points, we can write the following equation:

B = A + 1.1 (eq. 1)

At the same way, if the average verbal reasoning score exceeded the analytical writing score by 143.2 points, we can write the following equation:

A = C + 143.2 or

C = A - 143.2 (eq. 2)

Finally, the sum of the three average scores was 315.1, so:

A + B + C = 315.1 (eq. 3)

Then, replacing equation 1 and 2 in equation 3:

A + B + C = 315.1

A + (A + 1.1) + (A - 143.1) = 315.1

Solving for A:

A + A + 1.1 + A - 143.2 = 315.1

3A = 315.1 - 1.1 + 143.2

3A = 457.2

A = 152.4

Replacing the value of A in equation 1 and 2:

B = A + 1.1 = 152.4 + 1.1 = 153.5

C = A - 143.2 = 152.4 - 143.2 = 9.2

So, the average score for each category is:

The average verbal reasoning score: 152.4

The average quantitative reasoning score: 153.5

The analytical writing score: 9.2