Question
A pen cost $1.50. A notebook cost $13.50 more than the pen. Gem spent $72 on such pens and notebooks. She bought twice as many pens as notebooks.
  1. How many notebooks did Gem buy?
  2. How much money did Gem spend on the pens? 
4 m
(a)

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(b)

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A pen cost $1.50. A notebook cost $13.50 more than the pen. Gem spent $72 on such pens and notebooks. She bought twice as many pens as notebooks.
  1. How many notebooks did Gem buy?
  2. How much money did Gem spend on the pens?