CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 14 people has average age 36. A member aged 49 is replaced by one aged 29. Find the new average age.
A. 33.57 years
B. 34.57 years
C. 35.57 years
D. 36.57 years
Correct Answer: B
Total changes by -20; new mean = 34.57 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 13 people has average age 35. A member aged 48 is replaced by one aged 28. Find the new average age.
A. 34.46 years
B. 32.46 years
C. 33.46 years
D. 35.46 years
Correct Answer: C
Total changes by -20; new mean = 33.46 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 12 people has average age 34. A member aged 47 is replaced by one aged 27. Find the new average age.
A. 33.33 years
B. 31.33 years
C. 34.33 years
D. 32.33 years
Correct Answer: D
Total changes by -20; new mean = 32.33 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 11 people has average age 33. A member aged 46 is replaced by one aged 26. Find the new average age.
A. 30.18 years
B. 33.18 years
C. 31.18 years
D. 32.18 years
Correct Answer: C
Total changes by -20; new mean = 31.18 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 16 people has average age 32. A member aged 45 is replaced by one aged 25. Find the new average age.
A. 31.75 years
B. 32.75 years
C. 29.75 years
D. 30.75 years
Correct Answer: D
Total changes by -20; new mean = 30.75 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 15 people has average age 31. A member aged 44 is replaced by one aged 24. Find the new average age.
A. 28.67 years
B. 31.67 years
C. 30.67 years
D. 29.67 years
Correct Answer: D
Total changes by -20; new mean = 29.67 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 14 people has average age 30. A member aged 43 is replaced by one aged 23. Find the new average age.
A. 27.57 years
B. 28.57 years
C. 29.57 years
D. 30.57 years
Correct Answer: B
Total changes by -20; new mean = 28.57 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 13 people has average age 29. A member aged 42 is replaced by one aged 22. Find the new average age.
A. 26.46 years
B. 28.46 years
C. 29.46 years
D. 27.46 years
Correct Answer: D
Total changes by -20; new mean = 27.46 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 12 people has average age 28. A member aged 41 is replaced by one aged 21. Find the new average age.
A. 27.33 years
B. 28.33 years
C. 26.33 years
D. 25.33 years
Correct Answer: C
Total changes by -20; new mean = 26.33 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A squad of 11 people has average age 27. A member aged 40 is replaced by one aged 20. Find the new average age.
A. 26.18 years
B. 27.18 years
C. 25.18 years
D. 24.18 years
Correct Answer: C
Total changes by -20; new mean = 25.18 years.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 6 people has average age 37. After 3 years, a relative aged 27 at that future time joins them. What is the new average then?
A. 40.14 years
B. 37.14 years
C. 38.14 years
D. 39.14 years
Correct Answer: C
Future total of original members = 6×(37+3); add 27 and divide by 7.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 5 people has average age 36. After 2 years, a relative aged 26 at that future time joins them. What is the new average then?
A. 38 years
B. 37 years
C. 36 years
D. 35 years
Correct Answer: C
Future total of original members = 5×(36+2); add 26 and divide by 6.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 8 people has average age 35. After 5 years, a relative aged 25 at that future time joins them. What is the new average then?
A. 40.33 years
B. 37.33 years
C. 39.33 years
D. 38.33 years
Correct Answer: D
Future total of original members = 8×(35+5); add 25 and divide by 9.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 7 people has average age 34. After 4 years, a relative aged 24 at that future time joins them. What is the new average then?
A. 36.25 years
B. 35.25 years
C. 37.25 years
D. 38.25 years
Correct Answer: A
Future total of original members = 7×(34+4); add 24 and divide by 8.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 6 people has average age 33. After 3 years, a relative aged 23 at that future time joins them. What is the new average then?
A. 33.14 years
B. 34.14 years
C. 36.14 years
D. 35.14 years
Correct Answer: B
Future total of original members = 6×(33+3); add 23 and divide by 7.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 5 people has average age 32. After 2 years, a relative aged 22 at that future time joins them. What is the new average then?
A. 34 years
B. 33 years
C. 32 years
D. 31 years
Correct Answer: C
Future total of original members = 5×(32+2); add 22 and divide by 6.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 8 people has average age 31. After 5 years, a relative aged 21 at that future time joins them. What is the new average then?
A. 36.33 years
B. 33.33 years
C. 35.33 years
D. 34.33 years
Correct Answer: D
Future total of original members = 8×(31+5); add 21 and divide by 9.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 7 people has average age 30. After 4 years, a relative aged 20 at that future time joins them. What is the new average then?
A. 33.25 years
B. 31.25 years
C. 34.25 years
D. 32.25 years
Correct Answer: D
Future total of original members = 7×(30+4); add 20 and divide by 8.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 6 people has average age 29. After 3 years, a relative aged 19 at that future time joins them. What is the new average then?
A. 31.14 years
B. 32.14 years
C. 29.14 years
D. 30.14 years
Correct Answer: D
Future total of original members = 6×(29+3); add 19 and divide by 7.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A family of 5 people has average age 28. After 2 years, a relative aged 18 at that future time joins them. What is the new average then?
A. 29 years
B. 30 years
C. 28 years
D. 27 years
Correct Answer: C
Future total of original members = 5×(28+2); add 18 and divide by 6.