Answer:
40 questions.
Explanation:
By proportion:
80 % is equivalent to 32 questions
So 100% .. .. .. .. .. .. (32/80) * 100
= 32 * 5/4
= 160/4
= 40
40
80/100=32/x
You can also set this up with a diagram.
x=40
5.2m questions
6.8m answers