At the Gaussland Olympics there are 480 student participants.

Each student is participating in 4 different events.

Each event has 20 students participating and is supervised by 1 adult coach.

There are 16 adult coaches and each coach supervises the same number of events.

How many events does each coach supervise?
(A) 12
(B) 8
(C) 6
(D) 16
(E) 15
Since there are 480 student participants and each student is participating in 4 events, then across all events the total number of (non-unique) participants is $480 \times 4=1920$.

Each event has 20 students participating.

Thus, the number of different events is $\frac{1920}{20}=96$.

Each event is supervised by 1 adult coach, and there are 16 adult coaches each supervising the same number of events.

Therefore, the number of events supervised by each coach is $\frac{96}{16}=6$.

ANSWER: (C)

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