SOLUTION: A collection of stamps consists of 6 cents stamps, 8 cents stamps, and 15 cents stamps. The number of 6 cents stamps is three times the number of 8 cents stamps. There are 6 more 1

Question 934801: A collection of stamps consists of 6 cents stamps, 8 cents stamps, and 15 cents stamps. The number of 6 cents stamps is three times the number of 8 cents stamps. There are 6 more 15 cents stamps than there are 6 cents stamps. The total value of all the stamps is $5.16. Find the number of each type of stamp.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = 6 cent stamps
y = 8 cent stamps
z = 15 cent stamps
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x = 3y
z = 6 + x
6x + 8y + 15z = 516
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put the system of linear equations into standard form
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x - 3y = 0
x - z = -6
6x + 8y + 15z = 516
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https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = 6 cent stamps = 18
y = 8 cent stamps = 6
z = 15 cent stamps = 24
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