Let's begin by listing out the information given to us:
Sports = 33% = 33/100 = 0.33
Academic clubs = 37% = 37/100 = 0.37
Sports and Academic clubs = 19% = 19/100 = 0.19
Remainder (Neither Sports nor Academic clubs) = 100 - (33 + 37 + 19)
= 100 - 99 = 1% = 1/100 = 0.01
We will find the proportion of students who participate in either sports or academic clubs by summing together the percentage of students that participate in Sports alone & those that participate in Academic clubs alone as shown below:
Therefore, the proportion of students who participate in either sports or academic clubs is 70% or 0.7