SOLUTION: Nina has a stamp collection of 2 cent stamps and 6 cent stamps. She has 5 less 6 cent stamps as 2 cent stamps. If the collection has a face value of 74 cents, how many of each does

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Question 1036252: Nina has a stamp collection of 2 cent stamps and 6 cent stamps. She has 5 less 6 cent stamps as 2 cent stamps. If the collection has a face value of 74 cents, how many of each does she have
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Let t = # of 2 cent stamps, and s = # six cent stamps.
==> s = t-5, and 0.02t + 0.06s = 0.74.
==> 0.02t + 0.06(t-5) = 0.74
<==> 0.02t + 0.06t - 0.3 = 0.74
==> 0.08t = 1.04
==> t = 13, the number of two-cent stamps, and
s = t-5 = 8, the number of six-cent stamps.