EPFO 2017 English Medium Solved Paper

Question : 114 of 121

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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. 1000 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?

Validate

Solution:

Number of bottles of cold drink bought in

Rs.1000 =1000/10=100

Number of bottles of cold drink bought in 100
empty bottles

=100/10=10

Again, number of bottles of cold drink bought in 10 empty bottles

= 1

Now, total empty bottles =

1 + 19 = 20

∴ Number of bottles of cold drink bought in 20 empty bottles =

20/10=2

Hence remaining empty bottles

= 2

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