if a class of children is separated into groups of 5 children, 2 children will be left over. If the class is separated into groups of children, 3 children will be left over. What is the smallest number of children the class could have.
Did you forget something in your question? The first separation is in a group of 5 children. What is the number of children in the 2nd separation where 3 are left. if it is in a group of 4 children where 3 are left, then you will have 27 children in the class. Because:
27/5 = 2 Left
27/4 =3 Left