ASVAB (Armed Services Vocational Aptitude Battery)Mathematics Knowledge (MK)Medium
A squad of soldiers is marching. They cover 4/5 of a mile in 12 minutes. If they maintain this pace, how long will it take them to cover 2 miles?
- A30 minutes
- B24 minutes
- C40 minutes
- D36 minutes
Show answer & explanationAnswer & explanation
Correct answer: A. 30 minutes
First, find the time to cover 1 mile: (12 minutes) / (4/5 mile) = 12 * (5/4) = 15 minutes per mile. Then, multiply by 2 miles: 15 minutes/mile * 2 miles = 30 minutes.
Why the other options are wrong
- B. This is the time for 8/5 miles (1.6 miles), not 2 miles.
- C. This is an incorrect calculation, possibly 12 * (5/4) * (8/5).
- D. This is an incorrect calculation, possibly 12 * 2 + 12.
Proportional Reasoning
Solving problems by establishing equivalent ratios or rates.
- Often involves finding a unit rate first.
- Ratios must be consistent.
- Can be solved using cross-multiplication.
Memory trick: Proportions are Parallel Paths to Progress.