# SOLUTION: John buys stamps. Some are 33 cents and the rest are 20 cents. The total equals 4.50.

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 Click here to see ALL problems on Expressions-with-variables Question 88031: John buys stamps. Some are 33 cents and the rest are 20 cents. The total equals 4.50.Answer by ankor@dixie-net.com(15656)   (Show Source): You can put this solution on YOUR website!Some are 33 cents and the rest are 20 cents. The total equals 4.50. : Let x = no. of 33 cent stamps, y = no. 20 cent stamps, keep everything in cents 33x + 20y = 450 : Assuming there are at least 2 ea 20 cent stamps: (450-40)/33 = 12.4 We can assume the number of 33 stamps is less than 13 Try 12: 33*12 = 396, 450 - 396 = 54, not a multiply of 20 assume it has to be an even number Try 10: 33*10 = 330, 450 - 330 = 120, bingo! : We have 10 ea 33 cent and 6 ea 20 cent stamps