Question

Lorenzo purchased 12 cookies. He gave of the cookies to Celine and gave of the remaining cookies to Petra.

How many cookies did Petra receive?

Answer 1

So we know that Lorenzo has 12 cookies right.
So now we have to find out how many cookies Celine has because there was no number of cookies she received.
So Celine now has 12 cookies.
So we now that Petra would have "12".
Because it didn't say that Celine or Lorenzo ate them, did it?!
I hope this helped!:)