CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 8 people is 36 years. What will their average age be after 6 years if the group is unchanged?
A. 44 years
B. 40 years
C. 46 years
D. 42 years
Correct Answer: D
Every age rises by 6; the mean also rises by 6 to 42.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 7 people is 34 years. What will their average age be after 5 years if the group is unchanged?
A. 41 years
B. 39 years
C. 37 years
D. 43 years
Correct Answer: B
Every age rises by 5; the mean also rises by 5 to 39.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 6 people is 32 years. What will their average age be after 4 years if the group is unchanged?
A. 38 years
B. 36 years
C. 40 years
D. 34 years
Correct Answer: B
Every age rises by 4; the mean also rises by 4 to 36.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 5 people is 30 years. What will their average age be after 3 years if the group is unchanged?
A. 31 years
B. 33 years
C. 35 years
D. 37 years
Correct Answer: B
Every age rises by 3; the mean also rises by 3 to 33.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 10 people is 28 years. What will their average age be after 2 years if the group is unchanged?
A. 34 years
B. 32 years
C. 28 years
D. 30 years
Correct Answer: D
Every age rises by 2; the mean also rises by 2 to 30.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 9 people is 26 years. What will their average age be after 6 years if the group is unchanged?
A. 32 years
B. 30 years
C. 36 years
D. 34 years
Correct Answer: A
Every age rises by 6; the mean also rises by 6 to 32.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 8 people is 24 years. What will their average age be after 5 years if the group is unchanged?
A. 31 years
B. 33 years
C. 29 years
D. 27 years
Correct Answer: C
Every age rises by 5; the mean also rises by 5 to 29.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 7 people is 22 years. What will their average age be after 4 years if the group is unchanged?
A. 30 years
B. 26 years
C. 28 years
D. 24 years
Correct Answer: B
Every age rises by 4; the mean also rises by 4 to 26.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 6 people is 20 years. What will their average age be after 3 years if the group is unchanged?
A. 25 years
B. 27 years
C. 23 years
D. 21 years
Correct Answer: C
Every age rises by 3; the mean also rises by 3 to 23.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
The average age of 5 people is 18 years. What will their average age be after 2 years if the group is unchanged?
A. 24 years
B. 22 years
C. 18 years
D. 20 years
Correct Answer: D
Every age rises by 2; the mean also rises by 2 to 20.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 73 and 74. What score is required in the last part to obtain a weighted average of 74?
A. 76.62
B. 72.62
C. 78.62
D. 74.62
Correct Answer: D
(73×25+74×35+x×40)/100=74; x=74.62.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 71 and 73. What score is required in the last part to obtain a weighted average of 73?
A. 76.25
B. 74.25
C. 78.25
D. 72.25
Correct Answer: B
(71×25+73×35+x×40)/100=73; x=74.25.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 69 and 72. What score is required in the last part to obtain a weighted average of 72?
A. 71.88
B. 77.88
C. 75.88
D. 73.88
Correct Answer: D
(69×25+72×35+x×40)/100=72; x=73.88.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 67 and 71. What score is required in the last part to obtain a weighted average of 71?
A. 73.5
B. 77.5
C. 71.5
D. 75.5
Correct Answer: A
(67×25+71×35+x×40)/100=71; x=73.5.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 65 and 70. What score is required in the last part to obtain a weighted average of 70?
A. 75.12
B. 73.12
C. 77.12
D. 71.12
Correct Answer: B
(65×25+70×35+x×40)/100=70; x=73.12.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 63 and 69. What score is required in the last part to obtain a weighted average of 74?
A. 87.25
B. 83.25
C. 89.25
D. 85.25
Correct Answer: D
(63×25+69×35+x×40)/100=74; x=85.25.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 61 and 68. What score is required in the last part to obtain a weighted average of 73?
A. 86.88
B. 88.88
C. 82.88
D. 84.88
Correct Answer: D
(61×25+68×35+x×40)/100=73; x=84.88.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 59 and 67. What score is required in the last part to obtain a weighted average of 72?
A. 86.5
B. 82.5
C. 88.5
D. 84.5
Correct Answer: D
(59×25+67×35+x×40)/100=72; x=84.5.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 57 and 66. What score is required in the last part to obtain a weighted average of 71?
A. 84.12
B. 82.12
C. 86.12
D. 88.12
Correct Answer: A
(57×25+66×35+x×40)/100=71; x=84.12.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A course grade uses weights 25%, 35%, and 40%. Scores in the first two parts are 55 and 65. What score is required in the last part to obtain a weighted average of 70?
A. 85.75
B. 87.75
C. 83.75
D. 81.75
Correct Answer: C
(55×25+65×35+x×40)/100=70; x=83.75.