Question

The picture has the question

Answer 1

Explanation:

Noah answered 16 questions and is informed that he's completed 80% of the survey.

To find t, you are given 16/t = 80% or 16/t = 0.8.

Switch t and 0.8 to get 16/0.8 or 16/80% to find t.

t = 20 questions.