Puzzle ZOKI 

Yesterday I was asked to buy some stamps.

Stamps, in the land of BrainBashers, are available in 2p, 7p, 10p, 15p and 20p denominations.

For three types of stamp, I was asked to buy five of each.

For the other two types of stamps, I was asked to buy six of each.

Unfortunately, I forgot which I was supposed to buy five of and which to buy six of.

I had been given £3.00, which just happened to be the exact money required, so the shopkeeper was able to work out what stamps I needed.

Which stamps did I buy?

Puzzle Copyright © Kevin Stone

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