How to find arithmetic mean

Practice Questions

ACT Math › How to find arithmetic mean

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1

Angela scores 17, 19, 13, 24, and 14 points in the first five games of a seven-game basketball season. If the scoring leader in Angela’s league averages 18 points per game, how many points must Angela score in the final two games combined to end the season with the highest scoring average in the league AND have a higher scoring average than any other player?

2

Find the arithmetic mean of this set of data:

{0, 0, 0, 0, 1, 5}

3

Greg got an average of 93 on his test scores this semester. He got a 92, 93, and 97 on the first three tests. If he received the same score on each of his last three tests, what was his score on each of these tests?

4

Bryan earned $8/hr working a 6-hour shift each day, Tuesday thru Thursday, at his job as a server. He also earned $7.75/hr tutoring for a 2-hour shift each day, Friday thru Sunday. What were his daily average earnings for the 6 day period?

5

Mark has a job mowing lawns for some of the people in his neighborhood. If Mark gets paid $30 per lawn, and it takes him 40 minutes to mow a lawn, what is his average hourly pay if he typically spends 4 hours total mowing lawns?

6

The mean of five numbers is 40. The mean of the smallest two numbers is 25. What is the mean of the other three numbers?

7

Ashley scored 80, 80, 83, 85, 90, and 77 on her tests this semester. If she wants an average of 85 on all her tests, which would she have to score on her final test?

8

Jenny just got her spring report card. She earned 3 As, 2 Bs and one C. If the values assigned to grades are 4 points for an A, 3 points for a B, and 2 points for a C, what is her GPA, rounded to the nearest tenth?

9

If the average of A, B, and C is 50, which of the following expressions represents the average of A, B, C, and D?

10

If Point X is located at -10 on a number line and Point Z is located at 101 on the same line. What is the midpoint of line XZ?

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