Question

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

Answer 1

HERE IS YOUR ANSWER!!
AVERAGE HUMAN HEART BEATS=72/MIN
". ". ". "=72/60per second
in 15 second= 1.2×15=18 beats/15s
in a day =72×60×24=103680
thankyou

Answer 2

in 1 min(60 secs)=72 times

in 15 sec=(72/60)*15

            =18 times

in 1 hour(60 mins)=72*60

                         =4320 times

in 1 day(1440 mins)=1440*72

                            =103680 times