#### Answer

$2.94\times10^{9}$ beats

#### Work Step by Step

70 beats/minute
60 minutes/hour
24 hours/day
365 days/year
80 years
$70\times60\times24\times365\times80=2943360000\approx2.94\times10^{9}$

Published by
Pearson

ISBN 10:
0-13446-914-3

ISBN 13:
978-0-13446-914-0

$2.94\times10^{9}$ beats

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