# I lose each day a random amount of money and there are 2 different probabilities that either skip the loss or diminish it.

Ok my problem is this. i Have lets say 100 euros. and each day there is a random loss. but each day there is a 40% chance not to lose money or a 25% chance to save 5 euros from the loss.(if the random loss is 30 euros per example i lose only 25) so my question is any way to create an algorith that will give me the average daily protection (a percentage per example 30% protection. that will mean that i lose 30% less than what i suppose to lose.) from those two probabilities combined? thank you.

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What does "random" in random loss mean? –  Phira Nov 19 '12 at 18:17
that you lose an amount of money which you cant predict how much it will be exactly..it might be any amount..you only know that there is a chance not to lose or a chance to lose 5euros less. –  Excadrix Nov 19 '12 at 19:04
If you can't predict it, then it doesn't make sense to ask as for a prediction. –  Phira Nov 19 '12 at 22:22
no you got it wrong i dont ask for a prediction.i ask for an average daily protection .. like i lose 30% less of whatever the loss is.. and i have two probabilities. one that saves 100% of the loss and one that save a certain amount of the loss (what ever this is) .They cant happen the same time though. it is either the first either the second or none. so i try to find something to express them both. –  Excadrix Nov 19 '12 at 22:30
If you do not know anything about the random process there is no way to convert the fixed amount of 5 euros into a percentage. –  Phira Nov 19 '12 at 22:53