Question 1189290
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At the {{{highlight(cross(writing))}}} <U>pencil</U> factory, the assembly line produces 225 pencils in a batch. 
The pencils are packaged in {{{highlight(cross(a))}}} {{{highlight(cross(box))}}} <U>BOXES</U> with 20 {{{highlight(pencils)}}} each. 
If 3 batches are made in one day, how many pencils will be leftover at the end.
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<pre>
The total pencils made is  225*3 = 675.


Divide it by 20 with the remainder.


    675 = 33*20 + 15.


The remainder 15 is the answer to the problem's question.
</pre>

Solved and explained.