Systems of Measurement: example 1.142

To convert weeks into minutes we will convert weeks into days, days into hours, and then hours into minutes. To do this we will multiply by conversion factors of 1.

	9 weeks
Write $1$ as $\frac{\text{7 days}}{\text{1 week}}$, $\frac{\text{24 hours}}{\text{1 day}}$, and $\frac{\text{60 minutes}}{\text{1 hour}}$.	$\frac{\text{9 wk}}{1}\cdot \frac{\text{7 days}}{\text{1 wk}}\cdot \frac{\text{24 hr}}{\text{1 day}}\cdot \frac{\text{60 min}}{\text{1 hr}}$
Divide out the common units.
Multiply.	$\frac{9\cdot 7\cdot 24\cdot \text{60 min}}{1\cdot 1\cdot 1\cdot 1}$
Multiply.	$\text{90,720 min}$

Juliet and her boyfriend will be apart for 90,720 minutes (although it may seem like an eternity!).