Answer: 60 of the patients are boys.
Step-by-step explanation: According to what is described, 5 in 8 patients are girls, then: 8 - 5 = 3, i.e., 3 in 8 are boys.
Mathematically the proportionality is [tex]\frac{3}{8}[/tex]
If 160 patients have appointments per month and [tex]\frac{3}{8}[/tex] are boys:
160.[tex]\frac{3}{8}[/tex] = 60
Per month, 60 boys have appointments at the medical office.