A bar is offering greatly reduced prices on their draft beer during their happy hour. (See above image for menu prices)
##### Try solving the creator version and it's second part too! Also if you would like to have some fun read this!!!

If a group of friends decide that they want to drink a total of \(25\) liters, how much would it cost them(minimum)?

**Details and assumptions:**

- The bartender doesn't know mathematics, and he
gives:*always*

1) \($2\) extra for ** each** \(\dfrac 12\)L drink you buy,

2) \($4\) extra for ** each** \(1\)L drink you buy and,

3) \($11\) extra for ** each** \(2\)L drink that you buy

For example, if you buy a \(1\)L drink and pay him \($50\), he will give you \($44\) instead of \($40\).

You can buy

\(\dfrac 12\)L drink.*at most ten*You can buy drinks in natural numbers, i.e. you can't buy \(12.5\) glasses of \(2\)L drink.

You have just got \($50\) bills with you.

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