Question

Carlos needs an average of 90% or greater on his quiz scores to earn an A in science class for the quarter. Each quiz is worth 20 points. The scores of his first four quizzes are shown in the table. There is one more quiz this quarter.

Quiz Score
1 18
2 19
3 17
4 20


What is the minimum score Carlos can earn on the final quiz to earn at least a 90% average?

Answer 1

On solving the provided question we can say that by percentage he need to scores 16 point in each

What is percentage?

A percentage in mathematics is a figure or ratio that is stated as a fraction of 100. The abbreviations "pct.," "pct," and "pc" are also occasionally used. It is frequently denoted using the percent symbol "%," though. The amount of percentages has no dimensions. With a denominator of 100, percentages are basically fractions. To show that a number is a percentage, place a percent symbol (%) next to it. For instance, if you correctly answer 75 out of 100 questions on a test (75/100), you receive a 75%. To compute percentages, divide the amount by the total and multiply the result by 100. The percentage is calculated using the formula (value/total) x 100%.

Eden needs an average of = 90%

. Each quiz is worth 20 points

90% 0f 20 = 90/100 * 20 = 16 points

he need to scores 16 point in each

Answer 2

Answer: Carlos can score a minimum of 16 points

Explanation:

each quiz is worth 20 points, so 20*5= 100 points in total (it is multiplied by 5 because he will be taking 5 tests in total), Carlos has earned a total of 74 points. In order for Carlos to receive a 90% average, he would need a 90/100, so 90-74= 16, therefore, Carlos needs a 16/20 in order to earn a 90% for the quarter.