SOLUTION: Kelly spent exactly $3.21 using 7 coins. Which coins could she have used?

Question 933020: Kelly spent exactly $3.21 using 7 coins.
Which coins could she have used?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
I found two ways:

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1 penny + 2 dimes + 2 half dollars + 2 silver dollars = 1*0.01 + 2*0.1 + 2*0.5 + 2*1 = 0.01 + 0.2 + 1 + 2 = $3.21

1+2+2+2 = 7 coins total

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1 penny + 2 nickels + 1 dime + 3 silver dollars = 1*0.01 + 2*0.05 + 1*0.1 + 3*1 = 0.01 + 0.1 + 0.1 + 3 = $3.21

1+2+1+3 = 7 coins total
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