For the tournament 2

For the dodgeball tournament, 8 teams signed up, from which pairs were formed by draw. In the first round, each pair played one match. The winners played semifinal matches and the winners of the semifinals played the last, final match, which determined the overall winner of the tournament. How many matches were played in the tournament?

B) For how many hours did the gym have to be rented if one match lasts on average 40 minutes?

Result

n =  7
t = 4:40 h

Step-by-step explanation:

$n=4+2+1=7$

$$\begin{gathered} t_0=40\text{min}\to \text{h}=40:60\text{h}=0.66667\text{h} \\ t=n\cdot t_0=7\cdot 0.6667=\frac{14}{3}=4.66667=4:40\text{h} \end{gathered}$$

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