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Mike sold half of his comic books and then bought 9 more. He now has 12. How many did he begin with?
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Mike sold half of his comic books and then bought 9 more. He now has 12. How many did he begin with?

User Petr Szturc
by
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2 Answers

1 vote
He began with 6 comic books
User Krishan
by
8.2k points
4 votes
You can make this an equation:

(x/2)+9=12 -- subtract 9 from both sides
x/2=3 -- multiply by 2
x=6

He started with 6 comic books.
User Rishabh Agarwal
by
8.2k points
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