50 yuan to find a neighbor to change counterfeit money, here is to confuse the problem solver, here to change or not to change is a loss of 50 yuan.

Therefore, according to the normal transaction, you can earn 6 yuan, and 50 yuan to lose counterfeit money is 44 yuan to lose the cost.

To put it another way, using fake money can also be regarded as useless money. Young people get the cost1shoes in 5 yuan, cash from 29 yuan. Cost loss in 44 yuan, profit loss in 50 yuan.