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3 December, 13:11

A person's heartbeat is 61 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. 3 December, 15:13
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    In this question, you are asked the time but given the speed (61beat/min) and the number of beats (3.1 x 10^9). Then the equation would be:

    Time = number of beats / speed

    Time = 3.1 x 10^9 beats / (61 beats/min) = 5.081 x 10^7 minutes.

    Then convert it to years, disregard of leap years it would be : 5.081 x 10^7 minutes / (60 minutes/hour) / (24 hour/day) / (365 day/year) = 96.69 years
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