In a survey, a group of students are asked their favorite sport. 18 students chose "other"

Football - 37.5%

Baseball - 40%

Other-?%

How many students participated?

How many chose football?

So assuming that each student chose only one sport or 'other', add the percents and subtract from 100

37.5+40=77.5

100-77.5=22.5

22.5%=other

18 students=22.5%

divide both sides by 22.5

0.8=1%

therfor

100%=80

80 students participated

futbol=37.5% of 80=0.375 times 80=30

30 picked football