SOLUTION: Galina spent $3.60 for stamps to mail packages. Some were 30¢ stamps and the rest were 20¢
stamps. The number of 20¢ stamps was 2 less than the number of 30¢ stamps. How many stam
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-> SOLUTION: Galina spent $3.60 for stamps to mail packages. Some were 30¢ stamps and the rest were 20¢
stamps. The number of 20¢ stamps was 2 less than the number of 30¢ stamps. How many stam
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Question 674378: Galina spent $3.60 for stamps to mail packages. Some were 30¢ stamps and the rest were 20¢
stamps. The number of 20¢ stamps was 2 less than the number of 30¢ stamps. How many stamps
of each kind did Galina buy? Answer by ReadingBoosters(3246) (Show Source):
You can put this solution on YOUR website! x= 30cent stamps
y= 20cent stamps
...
.3x+.2y = 3.60
y = x-2
...
.3x + .2(x-2) = 3.60
.3x + .2x - .4 = 3.6
.5x = 3.6 + .4
.5x = 4 30cent stamps
...
y = 8+2 = 20cent stamps
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