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Answer :
To solve the problem of determining what Ava must score on her fourth test to have an average of 93, we can follow these steps:
1. Understand Ava's Goal: Ava wants her average score to be 93 after four tests.
2. Calculate the Total Points Needed:
- Since the desired average is 93, and there are four tests, multiply the average by the number of tests:
[tex]\( 93 \times 4 = 372 \)[/tex]
Ava needs a total of 372 points from all four tests combined to achieve this average.
3. Sum of Ava's First Three Test Scores:
- Ava's scores on the first three tests are 88, 94, and 90.
- Add these scores together to find out how many points she has so far:
[tex]\( 88 + 94 + 90 = 272 \)[/tex]
4. Determine the Score Needed on the Fourth Test:
- Subtract the total of her current scores from the total points needed to find out what she must score on her fourth test:
[tex]\( 372 - 272 = 100 \)[/tex]
Therefore, Ava needs to score 100 on her fourth test to achieve an average of 93 across all four tests.
1. Understand Ava's Goal: Ava wants her average score to be 93 after four tests.
2. Calculate the Total Points Needed:
- Since the desired average is 93, and there are four tests, multiply the average by the number of tests:
[tex]\( 93 \times 4 = 372 \)[/tex]
Ava needs a total of 372 points from all four tests combined to achieve this average.
3. Sum of Ava's First Three Test Scores:
- Ava's scores on the first three tests are 88, 94, and 90.
- Add these scores together to find out how many points she has so far:
[tex]\( 88 + 94 + 90 = 272 \)[/tex]
4. Determine the Score Needed on the Fourth Test:
- Subtract the total of her current scores from the total points needed to find out what she must score on her fourth test:
[tex]\( 372 - 272 = 100 \)[/tex]
Therefore, Ava needs to score 100 on her fourth test to achieve an average of 93 across all four tests.
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