The price of a bottle of cold drink is Rs 10 One bottle of cold drink can also be bought by ret...........

General Mental Ability Arithmetical Reasoning

The price of a bottle of cold drink is Rs 10. One bottle of cold drink can also be bought by returning 10 empty bottles. A person has Rs 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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EPFO AO EO 2017

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Explanation:

Number of empty bottle initally = 19
Number of bottles he bought in Rs. 1000 =100
Number of bottles he bought from returning 100 empty bottle = 10
Number of bottles he bought from returning 10 empty bottle = 1
Number of empty bottle = 19 +1=20
Number of bottles he bought from returning 20 empty bottle = 2
After consuming all cold drinks he will left with 2 empty bottles.