SOLUTION: a stamp collector has some 15 cent stamps and some 20 cent stamps. the number of 15 cent stamps is eight less than three times the number of 20 cent stamps. the total value is $4.

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Question 291679: a stamp collector has some 15 cent stamps and some 20 cent stamps. the number of 15 cent stamps is eight less than three times the number of 20 cent stamps. the total value is $4. find the number of each type of stamp in the collection
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Complex numbers mean involving i the square root of -1.
f=15 centers t=20 centers
f=-8+3t
15f+20t=400
f=16 t=8