Answer:
160
Step-by-step explanation:
Total number of girls in grade is = 120
ratio of girls to boys is [tex]\frac{6}{8}[/tex]
Let number of boys be [tex]x[/tex]
∴[tex]\frac{6}{8} = \frac{120}{x}[/tex]
⇒[tex]6x = 120*8 = 960\\x = \frac{960}{6} \\x = 160[/tex]
Number of boys in grade = 160