from the whole group half the club are boys.
fraction of boys from the whole class = 1/2
from this fraction, 4/9th of the boys have brown eyes
therefore fraction of boys who have brown eyes
= 4/9 of 1/2
the 'of' function is used to multiply
\(\frac{4}{9} * \frac{1}{2}\)
when multiplying fractions numerators are multiplied by numerators and denominators multiplied by denominators
\(\frac{4*1}{9*2} = \frac{4}{18}\)
4/18 can be simplified by dividing the whole number by a common number
4/18 divided by 2 = 2/9
the answer is 2/9
2/9 of the club are boys with brown eyes
