The fire rate equals 4500 rounds per minute. Which of the following is equivalent in rounds per second?

The fire rate equals 4500 rounds per minute. Which of the following is equivalent in rounds per second?

• A. 60 rounds per second
• B. 90 rounds per second
• C. 120 rounds per second
• D. 75 rounds per second

Answer: (D)

Converting units is the key. There are 60 seconds in a minute, so to get rounds per second from rounds per minute you divide by 60. 4500 rounds per minute ÷ 60 equals 75 rounds per second. A quick check: 75 rounds/second × 60 seconds = 4500 rounds/minute, which confirms the conversion. If you consider the other values, they would correspond to different per-minute rates (for example, 60 rounds/second would be 3600 rounds/minute, and 90 rounds/second would be 5400 rounds/minute).

Converting units is the key. There are 60 seconds in a minute, so to get rounds per second from rounds per minute you divide by 60. 4500 rounds per minute ÷ 60 equals 75 rounds per second. A quick check: 75 rounds/second × 60 seconds = 4500 rounds/minute, which confirms the conversion. If you consider the other values, they would correspond to different per-minute rates (for example, 60 rounds/second would be 3600 rounds/minute, and 90 rounds/second would be 5400 rounds/minute).