Respuesta :

TisITheStudent
A heart will beat 140 times in two minutes
hassanshahzaib8
you can do this with ratio method 

10 mins :  700 times
  x          : 140 times

cross multiply and then solve it algebraically 
such as 10 * 140 = 700x

10*140/700 = x

2 = x

in 2 minutes the heart beat 140 times.

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