Question
After earning some money baby -sitting, a student spends $1.75 at the school store, $6.50 at the book fair, and $2 in the soda machine.
After earning some money baby -sitting, a student spends $1.75 at the school store, $6.50 at the book fair, and $2 in the soda machine. If he has $4.75 left over, how much money did he earn in the first place?
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Microeconomics
Authors: Douglas Bernheim, Michael Whinston
2nd edition
73375853, 978-0073375854
