Arikat145 Arikat145

07-03-2017
Mathematics

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While exercising Julie found that her heart was beating 12 times every five seconds how many times was it be eating per minute (60 seconds)

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07-03-2017

To find her heart rate per minute, set up a proportion.
Let x represent the number of heart beats in a minute.
12/5=x/60
5x=720
5/5x=720/5
X=144
Thus, her heart was beating at a rate of 144 beats per minute.

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