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Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books does he have now?
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4 votes
Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books does he have now?

User Zelfden
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1 Answer

7 votes

x+6=x+0.12x\\ 0.12x=6\\ x=50\\ 50+6=\boxed{56}
User Andras K
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