The main problem with this attempt to figure out where all the money goes is everywhere taxes are different. For example in some areas there is a City sales tax, a County Sales Tax and then a State Sales Tax. Next problem is the Income Tax which differs due to marital status, buisness type, the Weather, shoe size, Mother's Maiden name and many other items including a neighbor that reports what your doing to the IRS.
So if you started with $20, deduct the price of gasoline for your car to go somewhere to spend it, when you get there, you'ld be in the Minus already. Simple solution is use a Credit card but then what you just spent is now being hit with about 20% or more banking charges. Next you go ot a Loan Shark to borrow enough to pay off the credit card and find you now can not pay him back. So he has someone rub you out and no more problems with where the $20 went.
