SOLUTION: Katie brought some pens for $2.00 each and some pencils for $0.05 cents each. She brought twice as may pens as pencils and spent a total of $13.50. How many each did she buy ?

Question 1134945: Katie brought some pens for $2.00 each and some pencils for $0.05 cents each. She brought twice as may pens as pencils and spent a total of $13.50. How many each did she buy ?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
pencils=x
pens=2x
total is 3x
2x(2.00)+x(0.05)=13.50
4x+.05x=13.50
4.05x=13.50
x=3.33 pencils
2x=6.67 pens
these aren't integers
6 pens is the most she can buy which is $12
that leaves 3 pencils for 0.15 or $12.15 total
maybe you meant pencils for 0.50 each
then this would be 2x(2.00)+x(0.50) or 4.50 x=13.00
x=3 pencils
2x=6 pens
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