How long will six percocet 5 stay in your urine, and two norco (hydrocodone and acetaminophen) fives?

Drugs in the system: Firstly one would have to ask why is this important information? More implrtantly taking 5 percocets and 2 Norcos (hydrocodone and acetaminophen) at one time is bad practice.

In theory, ~1 day...: We estimate how long it takes body to get rid of drug at 5 half-lives. Half-life is time it takes for drug level to drop by 50%. So after 5 half-lives, you're down to 3.125% if I did my math correctly, which is essentially out of system. Oxycodone stays in body 3-4.5hrs depending upon reference (http://www.rxlist.com/oxycontin-drug/clinical-pharmacology.htm). Metabolism is affected by many variabl