Question 1112297
.
<pre>
In my school years we presented the solution in  one line:



          The number of books = {{{(112-16)/12}}} = {{{96/12}}} = 8.



The most advanced of us, young students, could notice that the info  " . . . a total 12 books . . . "  is EXCESSIVE and NON-NECESSARY 

and is not used in the solution.
</pre>