Question 1
A boat travels 12 miles downstream in 2 hours and then returns the same 12 miles upstream in 3 hours. What is the speed of the current?
Show answer & explanation
Correct answer: A - 1 mph
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These 10 free OAR questions are organized by exam domain, so you can see how each part of the Officer Aptitude Rating (OAR) blueprint is tested. Reveal the answer and explanation under each question.
A boat travels 12 miles downstream in 2 hours and then returns the same 12 miles upstream in 3 hours. What is the speed of the current?
Correct answer: A - 1 mph
A drawer contains 5 blue socks and 3 black socks. If two socks are drawn at random without replacement, what is the probability that both are blue?
Correct answer: C - 5/14
If x + y = 10 and x − y = 4, what is the value of x² − y²?
Correct answer: D - 40
If n is an odd integer, which of the following must be an even integer?
Correct answer: B - n² + n
A rectangular deck measures 12 feet by 16 feet. A support beam is run diagonally from one corner to the opposite corner. If the beam costs $8 per foot, what is the total cost of the beam?
Correct answer: B - $160
A candidate has scored 78, 85, and 92 on three examinations. What score is required on a fourth examination for the four-exam average to be exactly 86?
Correct answer: C - 89
The price of an item is increased by 20 percent, and the new price is then decreased by 20 percent. Compared with the original price, the final price is:
Correct answer: A - 4% lower than the original price
Pump A can fill a tank in 6 hours. Pump B can fill the same tank in 3 hours. Working together at their normal rates, how long will the two pumps take to fill the tank?
Correct answer: B - 2 hours
Passage: Damage control is the responsibility of every person aboard ship, not solely of the personnel assigned to repair lockers. While repair parties possess specialized equipment and training, the initial actions taken by the crew member who first discovers a casualty frequently determine whether a minor incident becomes a major one. For this reason, all hands receive basic damage control training regardless of rating. Which of the following can be inferred ONLY from the passage?
Correct answer: C - Repair party personnel receive more specialized training than other Sailors.
Passage: Operational Risk Management (ORM) is a decision-making tool used to increase operational effectiveness by anticipating hazards and reducing the potential for loss. ORM does not eliminate risk; rather, it provides a systematic process for identifying hazards, assessing them, and making informed decisions about which risks are acceptable in light of the mission. Based only on the passage, which statement is best supported?
Correct answer: B - ORM accepts that some risk will remain in an operation.
The OAR exam also covers these domains. Drill them in the full free practice test:
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