In a survey of teenagers, responded that they got regular exercise, and of those

said that walking was their main form of exercise. What fraction of the teenagers
mainly exercise by walking? (1 point)

1 answer

To find the fraction of teenagers who mainly exercise by walking, we need to take the number of teenagers who mainly walk and divide it by the total number of teenagers surveyed. Let's assume that the total number of teenagers surveyed is 100.

If 60% of teenagers responded that they got regular exercise, that would be 0.6 * 100 = <<0.6*100=60>>60 teenagers.
If 30% of those 60 teenagers said that walking was their main form of exercise, that would be 0.3 * 60 = <<0.3*60=18>>18 teenagers.

Therefore, the fraction of teenagers who mainly exercise by walking is 18/100 or 9/50.