# Textbooks

After check of textbooks found that every 10-th textbook should be withdrawn. Together 58 textbooks were withdrawn.

How many textbooks were in stock before withdrawn and how many after withdrawn?

Result

before:  580
after:  522

#### Solution:

$n_1 / 10 = 58 \ \\ n_1 = 10 \cdot 58 = 580$
$n_2 = n_1 - 58 = 522$ Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

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