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Just Keep the Change (Posted on 2003-06-15) Difficulty: 3 of 5
In a certain country, it takes a minimum of exactly 5 coins to make 13 cents, and a minimum of exactly 4 coins to make 14 cents.

What are the denominations of the coins (of value less than 15 cents) in this country?

Bonus: What country is it?

See The Solution Submitted by DJ    
Rating: 4.1818 (11 votes)

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Solution One Possibility | Comment 1 of 13
I don't know if there are other sets, but 2 cents and 3 1/2 cents works, as 2 x (3 1/2) + 3 x 2 = 13 cents and 4 x (3 1/2) = 14 cents.

I don't know of any sets that avoid the fractional cent.
  Posted by Charlie on 2003-06-15 05:42:52
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