The average human heart beats at 72 times per minute. How many times d

1.	The average human heart beats at 72 times per minute. How many times does it beat in 15 seconds ? How many in 1 hour ? How many in a day ?
Answer» Number of beats per 1 minute (60 seconds) = 72 times Number of beats per 1 second = \(\frac {72}{60} = \frac 65\)times Number of beats per 15 seconds = \(\frac 65\) x 15 =18 times ∴ Number of beats per 1 hour = \(\frac 65\)x 60 x 60 = 4320 times ∴ Number of beats per 1 day = 4320 x 24 = 103680 times.

The average human heart beats at 72 times per minute. How many times does it beat in 15 seconds ? How many in 1 hour ? How many in a day ?

Answer»

Number of beats per 1 minute (60 seconds) = 72 times

Number of beats per 1 second = \(\frac {72}{60} = \frac 65\)times

Number of beats per 15 seconds = \(\frac 65\) x 15 =18 times

∴ Number of beats per 1 hour = \(\frac 65\)x 60 x 60 = 4320 times

∴ Number of beats per 1 day = 4320 x 24 = 103680 times.