A elementary school teacher decides

An elementary school teacher decides to pole the class on the difficulty of last night’s homework assignment:

How many people were able to complete the assignment without parents help?

About 25% of the class raises their hands.

How many people we able to complete the assignment with the help of a parent? About 70% of the class raises their hand.

The teacher still notices about 5% of the class did not raise their hands.

She then calls out, “How many people had to help a parent complete your assignment?”