Question

Josh has a test everyday for 5 days. He gets the scores 87%, 92%, 63%, 79%, and x.

Please explain in full detail.

a. What is his average score for the first 4 days.

b. What should his score be, if he wants to have an average of 85%

Answer 1

a. 80.25

b. 104

Explanation:

For (a), you add all the numbers together and divide by 4 because there are 4 test scores.

87 + 92 + 63 + 79 ÷ 5 = 80.25

For (b), we need to set up an equation. It is going to be a similar concept.

87 + 92 + 63 + 79 + x ÷ 5 = 85

x = 104

Hope this helps!