1. The problem asks for the fraction of tennis club members aged 30 to 39 years old. 2. From the graph description, the tennis club has: - 2 members aged 20 to 29 - 16 members aged 30 to 39 - 2 members aged 50+ 3. Total tennis club members = $2 + 16 + 2 = 20$ 4. The number of members aged 30 to 39 is 16. 5. The fraction of tennis club members aged 30 to 39 is therefore: $$\frac{16}{20}$$ 6. Simplify the fraction by dividing numerator and denominator by their greatest common divisor, which is 4: $$\frac{16 \div 4}{20 \div 4} = \frac{4}{5}$$ 7. So, the fraction of tennis club members aged 30 to 39 in simplest form is $\frac{4}{5}$.