Question

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

Answer 1

Answer:

Step-by-step explanation:

Given :

Average human heartbeat rate  per minute.

To do :

We have to find how many times the heart beats in 15 seconds, in 1 hour, and in 1 second.

Solution :

1 minute  60 seconds and 1 hour  3600 seconds.

Now,

The number of times heartbeats in 60 seconds = 72 times

Number of time heart beats in 1 second= 72/60=6/5 times

Number of time heart beats in 15 seconds=6/5*15 = 6*3

                                                                      =18 times

Number of time heart beats in 1 hour = 6/5 *3600

                                                              =6* 720=4320 times

Therefore, the heartbeats 6/5  times in 1 second, 18 times in 15 seconds, and 4320 times in 1 hour.

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Answer 2

Answer:

The number of times heartbeats in 60 seconds 72 times. Therefore, the heartbeats times in 1 second, 18 times in 15 seconds, and 4320 times in 1 hour.

Given :Average human heartbeat rate per minute.To do :We have to find how many times the heart beats in 15 seconds, in 1 hour, and in 1 second.Solution :1 minute = 60 seconds and 1 hour = 3600 seconds.

3600 seconds.Now, The number of times heartbeats in 60 seconds 72 times.

Number of time heart beats in 1 second 72/60 = 6/5 times

Number of time heart beats in 15 seconds = 6/5 × 15 = 6×3 =18 times

Number of time heart beats in 1 hour

= 6/5 × 3600 = 6× 720 = 4320 times

therefore, the heartbeat 6/5 times in 1 second

18 times in 15 seconds

4320 times in 1 hour.

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