Buy Shop Assistants Cd

RE;I have a maths question to every one who is good with maths.?
Hey guys sorry if u didn`t understand the question first of all english is not my language, its my second language as u can understand from my writting,now we get back to question and made it easier for you.
We 3 brothers decide to buy cd player ,we put in each $10 so 3 times $10 is $30 we bought the cd player for $30 ok & the shop manager told the sales assistant they r on special this week its $25 so he gave him $5 in gold coins ,( yes we do have them here in Australia,in $1 & $2 gold coins ) on the way to give the change back to customers, sales assistant thought how am I going to divide $5 to 3 person equally, so he dicided to give each one $1 coin & kept himself $2 ok now How much each person put in to buy the cd player? $10 isnt it,sales assistant gave it back each $1 take away from $10 whats left $9 times 3 =$27 dollars and the sales assistant kept himself $2 +$27=$29 so the question is where is the $1 to make $30 ? Now do u understand the question?
its in the money duh
u added wrong we had this at school u add wrong to confuse the person
Glo-Worm Feat. Pam Berry – Crazy Town (Velocity Girl Cover)