## Algebra: A Combined Approach (4th Edition)

One minute has 60 seconds so an hour has 60 * 60 = 3600 seconds blinking every five seconds means that you blink $3600\div 5 =720$ times per hour. In 16 hours you blink $16* 720 = 11520$ times. One year has 365/366 days, which means that you are 16 * 365/366 =5840/5856 hours awake. In this time you blink $5840/5856 * 720=4204800/4216320$ times.