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17 February, 22:46

A person's heartbeat is 68 beats per minute. If his/her heart beats 3.1e9 times in a lifetime, how long (in whole years) does the person live? Disregard leap years.

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  1. 17 February, 22:50
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    To determine the number of years for a person to live, we can divide the total number of beats in a lifetime to the number of beats per minute. We first need to check if the units are similar so we can cancel them. We do as follows:

    3.1x10^9 beats / 68 beats per minute = 45588235.29 minutes (1hr / 60 min) (1 day/24hr) (1 year / 365 days) = 87 years

    Hope this answers the question. Have a nice day.
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