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 ?

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Question 1134859: 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 ?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
recheck the problem description.

p pens
L penciLs

Account for the cost:
2p%2B0.05L=13.5

Account for relation between pens and pencils:
2=p%2FL

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Simple algebra between p and L,
p=2L

Substitute into the cost equation:
2%2A2L%2B0.05L=13.5
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4L%2B0.05L=13.5
4.05L=13.5
L=13.5%2F4.05
L=3%261%2F3, but this is not a whole number; and both L and p must be whole numbers.

Answer by ikleyn(52831) About Me  (Show Source):
You can put this solution on YOUR website!
.
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 ?
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Please accept "my 2 pennies" to this problem. 

    I do not think that pencils might be priced at "$0.05 cents each."