SOLUTION: Of 100 people people in a room, 70 play tennis and 50 play golf. At most, how many play only one of these sports?

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Question 135733: Of 100 people people in a room, 70 play tennis and 50 play golf. At most, how many play only one of these sports?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
ADD UP THE PLAYERS 50+70=120
THIS SAYS THAT AT LEAST 20 PLAY BOTH SPORTS.
THUS THE MAX THAT CAN PLAY ONLY 1 SPORT IS 100-20=80 IS THE MAX THAT ONLY PLAY 1 SPORT.