Ten families have an average of 2 children per family. If exactly two of these families are childless, what is the average number of children in the families with children? Express your answer as a decimal to the nearest tenth.
+36916 Ten families average 2 children per family
then there are 20 children
if two families have no children then there are EIGHT families with 20 children
for an average 20 children/ 2 families = 2.5 children/family
