SOLUTION: Using only 32 cent and 20 cent stamps, Charlie put $3.36 postage on a package he sent to his sister. He used twice as many 32 cent stamps as 20 cent stamps.

Algebra ->  Linear-equations -> SOLUTION: Using only 32 cent and 20 cent stamps, Charlie put $3.36 postage on a package he sent to his sister. He used twice as many 32 cent stamps as 20 cent stamps.      Log On


   

Question 1068822: Using only 32 cent and 20 cent stamps, Charlie put $3.36 postage on a package he sent to his sister. He used twice as many 32 cent stamps as 20 cent stamps.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x of 20 cent stamps
y of 32 cent stamps
system%2820x%2B32y=336%2Cy%2Fx=2%29

20x%2B32%282x%29=336
20x+64x=336
84x=336
x=336%2F84
highlight%28x=4%29
and highlight%28y=8%29.