SOLUTION: could you please awnser this rosie spent $2 on stamps she bout three times more 10 cent stamps than 20 cent ones how many of each did she buy thank you

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Question 1027202: could you please awnser this rosie spent $2 on stamps she bout three times more 10 cent stamps than 20 cent ones how many of each did she buy thank you
Answer by ikleyn(53763) About Me  (Show Source):
You can put this solution on YOUR website!
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could you please awnser this: Rosie spent $2 on stamps. She bout three times more 10 cent stamps than 20 cent ones. How many of each did she buy? thank you.
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Let x be the number of 20-cent stamps Rosie bought.
Then the number of 10-cent stamps is 3x.


The "value" equation is 

3x*10 + 20*x = 200,   or

30x + 20x = 200,   or   

50x = 200.

Hence,

x = 200%2F50 = 4.

Rosie bought 4 20-cent stamps and 3*4 = 12 10-cent stamps.