There are ‘b’ boys and ‘g’ girls in a class. The ratio of the number of boys to the total number of students in the class is:
\(\dfrac{b}{b+g}\)
\(\dfrac{g}{b+g}\)
\(\dfrac{b}{g}\)
\(\dfrac{b+g}{b}\)
Identify what we know.
Boys in the class: ( b )
Girls in the class: ( g )
Find the total number of students.
Total students (=) boys (+) girls
( ext{Total} = b + g )
Write what the ratio is asking for.
We need: boys : total students
Ratio as a fraction (=) (dfrac{ ext{boys}}{ ext{total}})
Substitute the values.
( ext{boys} = b)
( ext{total} = b + g)
So, the ratio (=) (dfrac{b}{,b + g,})
Match with the options.
(dfrac{b}{,b + g,}) corresponds to Option A.