Mathematics
Data Interpretation
Study the data: A=96, B=123, C=46, D=77. What is the average of the four values?
A. 342
B. 80.5
C. 85.5
D. 90.5
Correct Answer: C
Average = (96+123+46+77) ÷ 4 = 85.5.
Mathematics
Data Interpretation
Study the data: A=89, B=112, C=136, D=60. What is the difference between the highest and the lowest value?
A. 81
B. 60
C. 136
D. 76
Correct Answer: D
Highest = 136, lowest = 60; difference = 136 − 60 = 76.
Mathematics
Data Interpretation
Study the data: A=82, B=101, C=123, D=43. What is the total of all four values?
A. 450
B. 349
C. 339
D. 267
Correct Answer: B
Total = 82+101+123+43 = 349.
Mathematics
Data Interpretation
Study the data: A=75, B=90, C=110, D=115. What is the simplest ratio of B to D?
A. 23:18
B. 205:1
C. 90:115
D. 18:23
Correct Answer: D
90:115 simplifies by HCF 5 to 18:23.
Mathematics
Data Interpretation
Study the data: A=68, B=79, C=97, D=98. If value B increases by 17, what will its new value be?
A. 79
B. 113
C. 96
D. 62
Correct Answer: C
New value = 79 + 17 = 96.
Mathematics
Data Interpretation
Study the data: A=61, B=68, C=84, D=81. Approximately what percentage of the total is value D?
A. 96.4%
B. 32.6%
C. 27.6%
D. 22.6%
Correct Answer: C
Percentage = 81/294 × 100 ≈ 27.6%.
Mathematics
Data Interpretation
Study the data: A=54, B=57, C=71, D=64. What is the average of the four values?
A. 56.5
B. 246
C. 61.5
D. 66.5
Correct Answer: C
Average = (54+57+71+64) ÷ 4 = 61.5.
Mathematics
Data Interpretation
Study the data: A=47, B=46, C=58, D=47. What is the difference between the highest and the lowest value?
A. 17
B. 58
C. 46
D. 12
Correct Answer: D
Highest = 58, lowest = 46; difference = 58 − 46 = 12.
Mathematics
Data Interpretation
Study the data: A=40, B=35, C=45, D=30. What is the total of all four values?
A. 150
B. 185
C. 110
D. 140
Correct Answer: A
Total = 40+35+45+30 = 150.
Mathematics
Age Problems
The present age difference between A and B is 19 years, and their total present age is 77 years. What will A's age be 8 years later if A is the older person?
A. 37
B. 48
C. 56
D. 58
Correct Answer: C
A's present age = (77+19)/2 = 48; after 8 years it is 56.
Mathematics
Age Problems
The present age difference between A and B is 17 years, and their total present age is 69 years. What will A's age be 7 years later if A is the older person?
A. 43
B. 50
C. 33
D. 52
Correct Answer: B
A's present age = (69+17)/2 = 43; after 7 years it is 50.
Mathematics
Age Problems
The present age difference between A and B is 15 years, and their total present age is 61 years. What will A's age be 6 years later if A is the older person?
A. 29
B. 44
C. 38
D. 46
Correct Answer: B
A's present age = (61+15)/2 = 38; after 6 years it is 44.
Mathematics
Age Problems
The present age difference between A and B is 13 years, and their total present age is 53 years. What will A's age be 5 years later if A is the older person?
A. 33
B. 38
C. 25
D. 40
Correct Answer: B
A's present age = (53+13)/2 = 33; after 5 years it is 38.
Mathematics
Age Problems
The present age difference between A and B is 11 years, and their total present age is 45 years. What will A's age be 4 years later if A is the older person?
A. 32
B. 34
C. 21
D. 28
Correct Answer: A
A's present age = (45+11)/2 = 28; after 4 years it is 32.
Mathematics
Age Problems
The present ages of two persons are in the ratio 2:1. Their total age is 15 years. What is the age of the older person?
A. 5
B. 11
C. 10
D. 15
Correct Answer: C
One ratio part = 15 ÷ 3 = 5; older age = 2 × 5 = 10.
Mathematics
Age Problems
The present ages of A and B add up to 77 years, and A is 19 years older than B. What is B's present age?
A. 29
B. 31
C. 48
D. 27
Correct Answer: A
If B=x, then A=x+19. Thus 2x+19=77, so x=29.
Mathematics
Age Problems
A person is 42 years old now. What was the age 3 years earlier?
A. 45
B. 40
C. 39
D. 37
Correct Answer: C
Past age = 42 − 3 = 39 years.
Mathematics
Age Problems
A person is 45 years old at present. What will the age be after 3 years?
A. 48
B. 49
C. 42
D. 47
Correct Answer: A
Future age = 45 + 3 = 48 years.
Mathematics
Age Problems
A father is 44 years old and his son is 21. What will be the difference between their ages after 2 years?
A. 21
B. 25
C. 65
D. 23
Correct Answer: D
Age difference remains constant: 44 − 21 = 23 years.
Mathematics
Age Problems
The present ages of two persons are in the ratio 5:2. Their total age is 56 years. What is the age of the older person?
A. 16
B. 8
C. 40
D. 48
Correct Answer: C
One ratio part = 56 ÷ 7 = 8; older age = 5 × 8 = 40.