If Julie has $1.25 in dimes and nickels, how many different combinations of the coins could she have?

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- February 1st 2010, 01:51 PMsri340algebra (combinations)
If Julie has $1.25 in dimes and nickels, how many different combinations of the coins could she have?

- February 1st 2010, 05:39 PMTheEmptySet
- February 1st 2010, 05:42 PMSoroban
Hello, sri340!

Quote:

Julie has $1.25 in dimes and nickels.

How many different combinations of the coins could she have?

Let: .

Then: .

Their total value is 125 cents: .

So we have:

. . .

There are 13 combinations.