Answer:
67 beats per minute
Step-by-step explanation:
Sam's heart rate while rowing = 1965 times per 15 minutes
So, in one minute, Sam's heart will beat = [tex]\frac{1965}{15}=131[/tex] beats per minute
Therefore, Sam's heart beats 131 times in one minutes while rowing.
While resting Sam's heart beats 16 times in 15 seconds.
In 1 second, his heart beat will be = [tex]\frac{16}{15}[/tex] beats per second
In 60 seconds(1 minutes), his heart beat will be = [tex]\frac{16}{15} \times 60 = 64[/tex] beats per minute
The difference in the heart rate of Same when he was rowing vs resting = 131 - 64 = 67 beats per minute
