Calculating Average Test Scores

The video tutorial explains how to determine the score needed on a fifth math test to achieve an average of 90% or higher. It begins by listing the scores of the first four tests and introduces the unknown fifth score as 'x'. The tutorial then sets up an equation to find the average, solves it to determine that a score of at least 95% is needed on the fifth test, and concludes with a summary of the solution.

What is the main objective of the problem discussed in the video?

• To find the highest score possible on the fifth test.

• To compare the scores of different students.

• To determine the score needed on the fifth test to achieve an average of 90% or higher.

• To calculate the total score of all tests.

What are the scores of the first four tests?

• 87%, 82%, 91%, 95%

• 85%, 80%, 90%, 92%

• 88%, 83%, 92%, 96%

• 86%, 81%, 89%, 94%

What variable is used to represent the unknown fifth test score?

• W

• X

• Z

• Y

How is the average score calculated in the video?

• By adding all scores and dividing by five.

• By subtracting the lowest score and dividing by four.

• By adding all scores and dividing by four.

• By multiplying all scores and dividing by five.

What condition is set for the average score in the equation?

• It should be less than 90%.

• It should be exactly 85%.

• It should be greater than or equal to 90%.

• It should be more than 95%.

What is the sum of the first four test scores?

• 375

• 345

• 355

• 365

What operation is performed to eliminate the fraction in the equation?

• Division

• Subtraction

• Addition

• Multiplication

What is the minimum score required on the fifth test to achieve the desired average?

• 93%

• 95%

• 90%

• 92%

What will be the average score if the fifth test score is exactly 95%?

• 90%

• 91%

• 89%

• 88%

What happens if the fifth test score is higher than 95%?

• The average will be higher than 90%.

• The average will be exactly 95%.

• The average will remain 90%.

• The average will be lower than 90%.