perplexus.info :: Just Math : Foreign Puppy

Foreign Puppy (Posted on 2003-10-31)

A man wishes to sell a puppy for $11. A customer wants to buy it but only has foreign currency. The exchange rate for the foreign currency is 11 round coins = $15, 11 square coins = $16, 11 triangular coins = $17.

How many of each coinage should the customer pay?

See The Solution Submitted by Ravi Raja

Rating: 3.8000 (5 votes)

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Solution

| Comment 8 of 9 |

Solution: 7 round coins and 1 square coin
1 round coin = $1 4/11 and 1 square coin = $1 5/11
7 round coins = $9 6/11 + 1 square coin = $11

Posted by GimmeKat on 2003-11-05 16:38:17

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