Difference between revisions of "2023 SSMO Team Round Problems/Problem 8"

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Latest revision as of 22:25, 15 December 2023

Problem

Three rabbits run away from the origin at the same speed and constant velocity such that the angle between any two rabbits' directions is $120^\circ$. After $12$ seconds, a hunter with a speed $\sqrt{7}$ times that of the rabbits runs from the origin. Let the minimal time in seconds needed for her to meet (and subsequently) catch all three rabbits be $a + b\sqrt{c}$. Find $a + b + c$.

Solution