The answer is 20%. Let me explain. There are a total of 20 people that surveyed right? If 10 chose soccer and 6 chose golf that's 16 athletes that chose another sport other than football. 20 people minus the 16 non-football lovers equals 4. So 4 people chose football. That means 4/20 as a fraction. As a percent (because a percent is always out of one hundred) it's 20% because if you multiplied the denominator to get a base of 100 and multiplied the same number to the numerator you'd get 20/100. The number would be five because 5*20=100. You'd change that fraction to a percent which makes it 20%. Hope this helped
