abbyhime15 abbyhime15

05-10-2016
Mathematics

contestada

If a heart beats 65 times in one minute, then how many times does a heart beat in 72 seconds?

Respuesta :

Kaustav Kaustav

05-10-2016

1 minute = 60 seconds.
In 60 sec, a heart beats 65 times.
In 1 sec, a heart beats 65/60 times.
In 72 sec, w heart beats (65×72)/60 times
= 4680/60 times
= 78 times.

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