Answer:
Total questions are 80 questions.
Step-by-step explanation:
The relationship between the total number of questions and percentage of progress is direct proportion, which means the larger of the number of questions, the larger of the progress's percentage and vice versa.
[tex]\boxed{\frac{x_1}{y_1} =\frac{x_2}{y_2} }[/tex]
Given:
total question₁ (x₁) = 16
percentage₁ (y₁) = 20%
percentage₂ (y₂) = 100%
[tex]\displaystyle\frac{16}{20\%} =\frac{x_2}{100\%}[/tex]
[tex]x_2=\frac{100\%}{20\%}\times16[/tex]
[tex]=80\ questions[/tex]
