Answer
See the picture.
Work Step by Step
Total: 40 patients.
The relative frequency for "25-34" is $\frac{3}{40}=0.075$
The relative frequency for "35-44" is $\frac{6}{40}=0.150$
The relative frequency for "45-54" is $\frac{17}{40}=0.425$
The relative frequency for "55-64" is $\frac{9}{40}=0.225$
The relative frequency for "65-74" is $\frac{5}{40}=0.125$
