Antonio’s heart beats 255 times in 3 minutes. What is his heart rate, in beats per second?
A. 255 beats per second
B. 5,100 beats per second
C. 1.42 beats per second
D. 765 beats per second
To find Antonio's heart rate in beats per second, we need to convert the given information from beats per minute to beats per second. To do this, we divide the number of beats in 3 minutes by the number of seconds in 3 minutes.
First, we need to convert 3 minutes into seconds. Since there are 60 seconds in 1 minute, we multiply 3 minutes by 60.
3 minutes * 60 seconds/minute = 180 seconds.
Now, we can calculate the heart rate in beats per second by dividing the number of beats (255) by the number of seconds (180).
Heart rate = 255 beats / 180 seconds.
Simplifying the fraction by dividing the numerator and denominator by their greatest common divisor, which is 15, we get:
Heart rate = (255/15) beats / (180/15) seconds.
Heart rate = 17 beats / 12 seconds.
So, Antonio's heart rate is approximately 1.42 beats per second.
Therefore, the correct answer is C. 1.42 beats per second.