After the check of textbooks found that teachers should withdraw every 9-th textbook. Together 176 textbooks were withdrawn.

How many textbooks were in stock before being withdrawn, and how many after withdrawal?

Correct answer:

x =  1584
y =  1408

Step-by-step explanation:

x=9 176=1584
y=9 176176=1408   Verifying Solution:  r=x176=1584176=910.1111

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