The price of a bottle of cold drink is ₹ 10. One bottle of cold drink can also be bought by returning 10 empty bottles. A person has ₹ 1,000 and 19 empty bottles. Assuming that the person can consume any number of bottles he buys, what will be the number of empty bottles he possesses at the end if he buys maximum number of bottles of cold drink and consumes all?
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