ACT: Mean from totals Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/act-math/act-mean-from-totals/quiz/

1. 1

   Lena's test scores are 80, 85 and 90. What score on the next test makes her mean 87?
   1. A) 93
   2. B) 255
   3. C) 348

2. 2

   Mia's quiz scores are 90, 84 and 88. What score on the next quiz makes her mean 89?

   Answer: ____________________

3. 3

   The mean of 5 numbers is 12. Four of them are 10, 8, 15 and 11. What is the fifth number?
   1. A) 44
   2. B) 60
   3. C) 16

4. 4

   The mean of 3 numbers is 15. Two of them are 11 and 19. What is the third number?

   Answer: ____________________

5. 5

   Ben's game points are 60, 74, 68 and 70. What number of points in the next game makes his mean 70?
   1. A) 78
   2. B) 272
   3. C) 350

6. 6

   The mean of 3 test scores is 75. For a mean of 78, what score is needed on the next test?

   Answer: ____________________

7. 7

   The mean of 3 test scores is 90. What score on the next test makes the mean 88?
   1. A) 352
   2. B) 82
   3. C) 270

8. 8

   The mean of 5 numbers is 30. Four of them are 28, 35, 22 and 31. What is the fifth number?

   Answer: ____________________

9. 9

   A team of 12 players has a mean height of 75 inches. Another team of 18 players has a mean height of 85 inches. What is the mean height of all 30 players?
   1. A) mean = 80
   2. B) mean = 81
   3. C) mean = 30
   4. D) mean = 900

10. 10

    A class of 40 students has a mean score of 62. A class of 10 students has a mean score of 72. What is the mean score of all 50 students?

    Answer: ____________________