Question

16 teams, each with the same number of people, enter a quiz. at the semifinal stage there are 12 people left in the competition.
how many people entered the quiz?

Explanation:

Determine the number of teams in the semifinal stage

$$ N_{\text{semifinal}} = 4 $$

Calculate the number of people per team

$$ \text{People per team} = \frac{12}{4} = 3 $$

Calculate the total number of people who entered

$$ \text{Total people} = 16 \times 3 = 48 $$

Answer:

48