we know that
Ratio is the quantitative relation between two numbers
so
Let
x-------> number of boys in the class
y-------> number of girls in the class
\(ratio=\frac{x}{y}\)
in this problem we have
\(x=6\ boys\\y=15\ girls\)
Find the ratio
substitute the values in the formula
\(ratio=\frac{6}{15}\)
Divide by \(3\) both numerator and denominator
\(ratio=\frac{2}{5}\)
therefore
the answer is
the ratio of boys to girls is \(\frac{2}{5}\)
