Question

In a survey of teenagers, 2/3 responded that they got regular exercise, and 4/5 of those said that walking was their main form of exercise. What fraction of the teenagers mainly exercise by walking?

Answer 1

[AI-generated answer — Bot GPT 3.5]

If 2/3 of teenagers exercise regularly and 4/5 of the regular exercisers walk, then the fraction of teenagers who mainly exercise by walking is 4/5 * 2/3 = <<4/5*2/3=8/15>>8/15. Answer: \boxed{\frac{8}{15}}.