One wall of Kevin's living room measures 8 ft by 15 ft. Windows make up 22% of the surface area. What is the window area?
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There’s 36 that use both so put that in the middle. The TOTAL amount of people using the fitness suite is 57 so to find just that side you subtract 36 from 57 to get 21. Same thing with 49 and you get 13. Add all of them up and you get 70. 100-70=30. 30 people use neither so they go outside of the circles :)
