1470.51 – Heartbeats per Month

Count the number of your heartbeats in one minute. Let $x$ represent the number of heartbeats you counted. Then:

$$\dfrac{x \text{ beats}}{1 \text{ min}}\cdot\dfrac{60 \text{ min}}{1 \text{ hr}}\cdot\dfrac{24 \text{ hrs}}{1 \text{ day}}\cdot\dfrac{31 \text{ days}}{1 \text{ month}}=\dfrac{44640x \text{ beats}}{1 \text{ month}}$$

This means you can multiply the number of heartbeats you counted by 44,640 to get the number of heartbeats in one month. They say that your heart works as hard in one beat as you do when you squeeze a tennis ball. Awesome, no?