Question 1070059
 A collection of half dollars and nickels is worth $13.40. There are 34 coins in all. How many of each are there?
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Coins:: h + n = 34 coins
Value::50h + 5n = 1340 cents
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Modify for elimination::
10h + 10n = 10*34
10h +   n = 268
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Subtract and solve for "n"::
9n = 72
n = 8 (# of nickels)
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h = 34-n = 34-8 = 26 (# of half-dollars)
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Cheers,
Stan H.
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