OAR (OFFICER APTITUDE RATING) EXAM GUIDE | FULL EXAM BREAKDOWN OF THE TEST FORMAT WITH CORRECT ANSWERS AND RATIONALES

OAR (OFFICER APTITUDE RATING) EXAM
GUIDE | FULL EXAM BREAKDOWN OF THE
TEST FORMAT WITH CORRECT ANSWERS
AND RATIONALES


| Subtest | Questions | Time Limit |
| Math Skills | Approximately 30 | 40 minutes |
| Reading Comprehension | Approximately 25-30 | 30
minutes |
| Mechanical Comprehension | Approximately 25-30 |
15 minutes |
| **Total** | **Approximately 90** | **85 minutes** |




SECTION 1 – MATH SKILLS (MS) – 35 Questions
1. Solve for x: 3x + 7 = 22
A) 3
B) 5
C) 7
D) 9
Correct answer: B

,Rationale: 3x = 15 → x = 5.


2. What is 15% of 200?
A) 20
B) 25
C) 30
D) 35
Correct answer: C
Rationale: 0.15 × 200 = 30.


3. A rectangle has a length of 12 cm and a width of 5
cm. What is its area?
A) 17 cm²
B) 34 cm²
C) 60 cm²
D) 120 cm²
Correct answer: C
Rationale: Area = length × width = 12 × 5 = 60 cm².


4. A train travels at 60 miles per hour for 2.5 hours.
How far does it travel?
A) 120 miles

,B) 150 miles
C) 180 miles
D) 200 miles
Correct answer: B
Rationale: Distance = speed × time = 60 × 2.5 = 150
miles.


5. Simplify: (3/4) × (8/9)
A) 2/3
B) 3/4
C) 1/2
D) 4/5
Correct answer: A
Rationale: (3×8)/(4×9) = 24/36 = 2/3.


6. If 5 workers can complete a job in 8 days, how
many days will it take 10 workers?
A) 4 days
B) 6 days
C) 8 days
D) 10 days
Correct answer: A

, Rationale: Workers × days = constant. 5×8 = 40
worker-days. 40 ÷ 10 = 4 days.


7. A shirt originally priced at $40 is on sale for 20%
off. What is the sale price?
A) $8
B) $20
C) $32
D) $36
Correct answer: C
Rationale: 20% off = 80% of original. 0.80 × $40 = $32.


8. What is the value of 5² + 4³?
A) 41
B) 64
C) 89
D) 90
Correct answer: C
Rationale: 5² = 25, 4³ = 64, 25 + 64 = 89.


9. A right triangle has legs of 6 cm and 8 cm. What is
the hypotenuse?