No
Don't do cocaine.
30 days
It depends on what you mean by "in your system". In a urine screen the 40 years of use would not really make any difference compared to using 40 days. Cocaine usually stays in one's system for a urine screen 7-9 days. I have seen anywhere from a day or two less than that all the way up to 13 days after the last use.
5 days
No.
usually 1-3 days
cocaine will show in a drug test for minimum of 3-5 days depending on how heavy an how often you used
no , it takes 3 to 12 days to gt out of your system.
The quickest way to pass a drug test after using cocaine is obviously 1.) Time (it takes three days for cocaine to leave your system). 2.) Water, and lots of it, it won't completely take the drug out of your body but your urine will be dilluted.
Obviously not
Cocaine normally will show up in a urine test for 5 days after use.
You shouldn't do drugs