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?
(In reply to
re: Country by fwaff)
If you look at Trevor's solution you will see that the combinations are 5+2+2+2+2 and 5+5+2+2 and as far as I know England is using 2p & 5p in circulation.