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Can I Borrow?

Math brain teasers require computations to solve.

 

Puzzle ID:#28728
Fun:*** (2.61)
Difficulty:*** (2.3)
Category:Math
Submitted By:jessjspieks*us****

 

 

 



This is a teaser for people who know the US coins. My apologies to any out-of-country visitors.

You and a friend pass by a standard coin-operated vending machine and you decide to get a candy bar. The price is US$0.95, but after checking your pockets, you only have a dollar (US$1), and the machine only takes coins.

You turn to your friend and have this conversation.

You: Hey, do you have change for a dollar?
Friend: Let's see... I have 6 US coins but, although they add up to US$1.15, I can't break a dollar.
You: Huh? Can you make change for half a dollar?
Friend: No.
You: How about a quarter?
Friend: Nope. And before you ask I can't make change for a dime or nickel either.
You: Really? And these 6 coins are all US government coins currently in production?
Friend: Yes.
You: Well, can you just put your coins into the vending machine and buy me the candy bar, and I'll pay you back?
Friend: Sorry, I'd like to, but I can't with the coins I have.

What coins does your friend have?

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