Question
A notebook cost $2.50. A file cost $15.50 more than the notebook. Anna spent $336 on such notebooks and files. She bought four times as many notebooks as files.
  1. How many files did Anna buy?
  2. How much money did Anna spend on the notebooks? 
4 m
(a)

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(b)

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A notebook cost $2.50. A file cost $15.50 more than the notebook. Anna spent $336 on such notebooks and files. She bought four times as many notebooks as files.
  1. How many files did Anna buy?
  2. How much money did Anna spend on the notebooks?