The exchange rate for the foreign currency is as follows: 11 round coins= $15, 11 square coins= $16, 11 triangular coins= $17. How many of each coin should the customer pay?
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March 27th, 2010 at 7:23 am
like 9 round coins
March 27th, 2010 at 7:23 am
What colour is the puppy?
March 27th, 2010 at 7:23 am
wow thats a tricky one
Customer should pay
6 round coins
1 Square Coin
1 Triangular
March 27th, 2010 at 7:23 am
7 round coins + 1 square coin does the trick.
That is 7*(15/11) + 1*(16/11) + 0*(17/11) = 11
or, if you like:
7*15 + 1*16 + 0*17 = 121.
But it would be good to know what is the color of the puppy.