I have a pile of apples which contains less than 50 apples.  If I put them into piles of 5, I have none left over.  If I put them into piles of 6, I always have 3 left over.  If I put them into piles of 8, I always have 5 left over.  How many apples do I have? 
Overseas Competition->Knowledge Point->Calculation Modules->Whole Numbers->Whole Numbers Multiplication and Division->Division of Whole Numbers->Division with Remainders