motion2020 wrote:
At a college, 100 seniors play any of the three games: 35 play soccer, 45 play basketball and 50 play hockey. 10 seniors play all three games and 40% of seniors, playing only two games, play soccer. How many seniors play only soccer game?
(A) 35
(B) 34
(C) 33
(D) 32
(E) 31
motion202010 seniors are already playing all 3 games, how can only soccer be greater than 25 (35 - 10)???
What is it that I am missing?
AUBUC = A + B + C - (d + e + f) - 2(A∩B∩C)
100 = 35 + 45 + 50 - (d + e + f) - 2(10)
(d + e + f) = 110 - 100 = 10
Now, 40% of seniors, playing only two games, play soccer.
d + f = \(\frac{40}{100} (10) = 4\)
So, seniors playing only soccer = 35 - 4 -10 = 21
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