Answer:
Number of boys were
Step-by-step explanation:
According to Direct proportion:
When varies directly with then , {where is proportionality
constant}.
Let number of girl be ,
Number of boy be ,
And number of teacher be .
From the question,
Number of girls varies directly as the number of boys and inversely with number of teacher.
So, Using direct proportion we get an equation
........(a)
Case 1: , , and
Now, substituting all the values in equation (a) we get,
⇒
Case 2: , ,
Finding the number of boys using we get,
⇒
Therefore, Number of boys were