Ruben bought 6 new books for his collection. this increased his collection by 12%. how many books did he have before his purchases?

 The required number of books that Ruben had before purchases is 50.

Step-by-step explanation:  Given that Ruben bought 6 new books for his collection that increased his collection by 12%.

We are to find the number of books that Ruben had before purchases.

Let x denotes the number of books that Ruben had before purchases.

Then, according to the given information, we have

Thus, the required number of books that Ruben had before purchases is 50.

this shows a reflection over the x-axis and is translated one unit down and 6 units to the right (x + 6, y - 1)

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