Find the number of times the heart of a human being beats in 10 years.

1.	Find the number of times the heart of a human being beats in 10 years. Assume that the heart beats once in 0.8 sec.
Answer» In 0.8 s, the human heart make on beat. ∴ In 1 s the human heart makes = \(\frac{1}{0.8}=\frac{10}{8}\) beats. ∴ In 10 years the human heart makes = \(\frac{10}{8}\times10\times365\times24\times60\times60\) beats = 3.942 x 10⁸ beats.

Find the number of times the heart of a human being beats in 10 years. Assume that the heart beats once in 0.8 sec.

Answer»

In 0.8 s, the human heart make on beat.

∴ In 1 s the human heart makes

= \(\frac{1}{0.8}=\frac{10}{8}\) beats.

∴ In 10 years the human heart makes

= \(\frac{10}{8}\times10\times365\times24\times60\times60\) beats

= 3.942 x 10⁸ beats.