SOLUTION: Ms.Mynm bought 54 stamps for $12.00. She bought three times as many 39 cent stamps as 63 cent stamps, and the rest were 4 cent stamps. How many of each type did she buy?
63 cent
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63 cent
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Question 371699: Ms.Mynm bought 54 stamps for $12.00. She bought three times as many 39 cent stamps as 63 cent stamps, and the rest were 4 cent stamps. How many of each type did she buy?
63 cent 39 cent 4 cent
You can put this solution on YOUR website! Ms.Mynm bought 54 stamps for $12.00. She bought three times as many 39 cent stamps as 63 cent stamps, and the rest were 4 cent stamps. How many of each type did she buy?
63 cent 39 cent 4 cent
x 3x 54-(3x+x)
...
63x+39*3x+4(54-4x)=1200
63x+117x+216-16x=1200
164x+216=1200
164x=1200-216
164x=984
/164
x= 984/164
x= 6
39cent = 3x= 18
4 cent =(54-4x)=(54-24)=30
...
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