# SOLUTION: Okay here is the problem I need help with. It's not in a textbook but it is online. A stamp collection consits of 3, 8, and 15 cent stamps. The number of 8 cent stamps is one

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 Question 189097: Okay here is the problem I need help with. It's not in a textbook but it is online. A stamp collection consits of 3, 8, and 15 cent stamps. The number of 8 cent stamps is one less than triple the number of 3 cent stamps. The number of 15 cent stamps is six less than the number of 8 cent stamps. The total value of all the stamps is \$2.47. Find the number of 8 cent stamps in the collection.Answer by jonvaliente(64)   (Show Source): You can put this solution on YOUR website!Let x=no of 3 cent stamps 3x-1=no of 8 cent stamps (3x-1)-6=no of 15 cent stamps or 3x-7 3x+(3x-1)*8+(3x-7)*15=247 Simplifying we get: 3x+24x-8+45x-105=247 72x-113=247 Adding 113 on both sides, we get: 72x=360 Dividing both sides by 72 we get x=5 So there are: 5 3-cent stamps 14 8-cent stamps 8 15-cent stamps