asked 2.0k views
3 votes
Half of your baseball card collection got wet and was ruined. You bought 9 cards to replace some that were lost. How many did you begin with if you now have 20?

1 Answer

3 votes

solution:

n/2 + 9 = 20

n/2=20-9

n/2=11

n=22

answered
User Aldith
by
8.0k points
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