ASVAB (Armed Services Vocational Aptitude Battery)Arithmetic Reasoning (AR)Medium
A drone operator records that a reconnaissance drone collected 750 MB of data in the first 30 minutes of its flight. If the drone continues to collect data at the same rate, how many gigabytes (GB) of data will it collect in a 2-hour flight? (Note: 1 GB = 1000 MB)
- A3 GB
- B1.5 GB
- C1 GB
- D2 GB
Show answer & explanationAnswer & explanation
Correct answer: A. 3 GB
First, calculate the data collection rate per minute. Then, calculate the total data collected in 2 hours (120 minutes). Finally, convert the total megabytes to gigabytes.
Why the other options are wrong
- B. This option is incorrect; it might result from calculation errors, such as dividing by 2 instead of multiplying.
- C. This option is incorrect; it might result from calculation errors or incorrect unit conversion.
- D. This option is incorrect; it might result from calculating 1500 MB and incorrectly converting to GB.
Unit Rate & Conversion
Unit rate and conversion involves determining a rate per single unit of time or quantity, and then converting the total calculated amount into a different unit of measure.
- Unit rate: amount / time (or quantity).
- Requires consistent units for rate calculation.
- Conversion factors are essential for changing units (e.g., MB to GB, minutes to hours).
Memory trick: Find how much you get per minute, then multiply for the total time, then change the label.