SOLUTION: marie has 24 coins in half-dollars and dimes. the total value is $3.60. how many coins of each type does she have?

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Question 132686: marie has 24 coins in half-dollars and dimes. the total value is $3.60. how many coins of each type does she have?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
d= number of dimes
h= number of half-dollars
10d+%2B+50h+=+360
d+%2B+h+=+24
h+=+24+-+d
10d+%2B+50%2A%2824+-+d%29+=+360
10d+%2B+1200+-+50d+=+360
-40d+=+-840
d+=+21
h+=+24+-+d
h+=+3
She has 3 half-dollars and 21 dimes
check:
10d+%2B+50h+=+360
10%2A21+%2B+50%2A3+=+360
210+%2B+150+=+360
360+=+360
OK