Chocolate Puzzles

A shop sells eclairs chocolates @ Rs.1 each.
You can also get 1 chocolate by exchanging 3 wrappers.
If you have Rs. 15/-
How many chocolates you can get total?

Answer:
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First you get 15 chocolates in Rs 15/-

Then return 15 wrappers and get 5 chocolates.

Again return 3 wrappers and get 1 chocolate. Now you have 2 left out wrappers + 1 wrapper from new chocolate.

Now this one wrapper + two left out wrappers = 3 wrappers.

At last on returning 3 wrappers you will get 1 chocolate.

So, total: 15+5+1+1 = 22 chocolates

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