40% of students chose baseball 37.5% chose football and 18 chose other. How many students participated?
40% of students chose baseball 37.5% chose football and 18 chose other. How many students participated?
If the numbers of students=S
40%S chose baseball
37.5%S chose football
1 - (.40S+.375S)=18
1 - .775S=18
.225S=18 divide both sides by .225
S=18/.225
S=80 number of students who participated in the survey
