for football : 42 ...makes .......210 people
baseball : 33 .............makes....x people
cross multiply 42x = 33 x 210
42x = 6930
x = 6930 / 42 = 165 people
soccer : 25 ....which makes y people
football : 42....which makes 210 people
CROSS MULTIPLY.... 42 y = 210 x 25
y = 5250 / 42 = 125
so total people surveyed = 125 + 210 + 165 = 500
you can check answer by this : 42 / 100 x 500 = 210 people.....
HOPE IT HELPED !!!!!!!!!!!!!
