CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 19 members with average 39, and Group B has 10 members with average 48. What is the combined average?
A. 44.1
B. 41.1
C. 43.1
D. 42.1
Correct Answer: D
Combined mean = (19×39+10×48)/(29) = 42.1.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 18 members with average 36, and Group B has 9 members with average 46. What is the combined average?
A. 39.33
B. 41.33
C. 40.33
D. 38.33
Correct Answer: A
Combined mean = (18×36+9×46)/(27) = 39.33.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 17 members with average 33, and Group B has 8 members with average 44. What is the combined average?
A. 38.52
B. 37.52
C. 36.52
D. 35.52
Correct Answer: C
Combined mean = (17×33+8×44)/(25) = 36.52.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 16 members with average 30, and Group B has 14 members with average 42. What is the combined average?
A. 37.6
B. 35.6
C. 36.6
D. 34.6
Correct Answer: B
Combined mean = (16×30+14×42)/(30) = 35.6.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 15 members with average 45, and Group B has 13 members with average 40. What is the combined average?
A. 44.68
B. 43.68
C. 41.68
D. 42.68
Correct Answer: D
Combined mean = (15×45+13×40)/(28) = 42.68.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 14 members with average 42, and Group B has 12 members with average 48. What is the combined average?
A. 46.77
B. 44.77
C. 45.77
D. 43.77
Correct Answer: B
Combined mean = (14×42+12×48)/(26) = 44.77.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 13 members with average 39, and Group B has 11 members with average 46. What is the combined average?
A. 44.21
B. 41.21
C. 42.21
D. 43.21
Correct Answer: C
Combined mean = (13×39+11×46)/(24) = 42.21.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 12 members with average 36, and Group B has 10 members with average 44. What is the combined average?
A. 38.64
B. 39.64
C. 41.64
D. 40.64
Correct Answer: B
Combined mean = (12×36+10×44)/(22) = 39.64.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 11 members with average 33, and Group B has 9 members with average 42. What is the combined average?
A. 38.05
B. 39.05
C. 37.05
D. 36.05
Correct Answer: C
Combined mean = (11×33+9×42)/(20) = 37.05.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
Group A has 10 members with average 30, and Group B has 8 members with average 40. What is the combined average?
A. 36.44
B. 35.44
C. 34.44
D. 33.44
Correct Answer: C
Combined mean = (10×30+8×40)/(18) = 34.44.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 24 people has an average of 34. 2 new people with average 53 join. What is the new group average?
A. 35.46
B. 34.46
C. 36.46
D. 37.46
Correct Answer: A
Combined mean = (24×34+2×53)/(26) = 35.46.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 23 people has an average of 33. 4 new people with average 51 join. What is the new group average?
A. 35.67
B. 37.67
C. 34.67
D. 36.67
Correct Answer: A
Combined mean = (23×33+4×51)/(27) = 35.67.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 22 people has an average of 32. 3 new people with average 49 join. What is the new group average?
A. 33.04
B. 36.04
C. 35.04
D. 34.04
Correct Answer: D
Combined mean = (22×32+3×49)/(25) = 34.04.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 21 people has an average of 31. 2 new people with average 47 join. What is the new group average?
A. 32.39
B. 34.39
C. 33.39
D. 31.39
Correct Answer: A
Combined mean = (21×31+2×47)/(23) = 32.39.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 20 people has an average of 30. 4 new people with average 45 join. What is the new group average?
A. 31.5
B. 33.5
C. 32.5
D. 34.5
Correct Answer: C
Combined mean = (20×30+4×45)/(24) = 32.5.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 19 people has an average of 29. 3 new people with average 43 join. What is the new group average?
A. 31.91
B. 32.91
C. 30.91
D. 29.91
Correct Answer: C
Combined mean = (19×29+3×43)/(22) = 30.91.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 18 people has an average of 28. 2 new people with average 41 join. What is the new group average?
A. 30.3
B. 28.3
C. 29.3
D. 31.3
Correct Answer: C
Combined mean = (18×28+2×41)/(20) = 29.3.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 17 people has an average of 27. 4 new people with average 39 join. What is the new group average?
A. 31.29
B. 28.29
C. 29.29
D. 30.29
Correct Answer: C
Combined mean = (17×27+4×39)/(21) = 29.29.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 16 people has an average of 26. 3 new people with average 37 join. What is the new group average?
A. 29.74
B. 28.74
C. 26.74
D. 27.74
Correct Answer: D
Combined mean = (16×26+3×37)/(19) = 27.74.
CSS - PMS - CCE - PCS - Mathematics
Average / Arithmetic Mean
A group of 15 people has an average of 25. 2 new people with average 35 join. What is the new group average?
A. 27.18
B. 26.18
C. 28.18
D. 25.18
Correct Answer: B
Combined mean = (15×25+2×35)/(17) = 26.18.