Equivalent ratios are those ratios which are same that is on simplifying each of them, we will get the same answer.
A.[tex] \frac{2}{3} and \frac{9}{15} = \frac{3}{5} [/tex]
So they are not equivalent
B.[tex] \frac{5}{8} and \frac{15}{21} = \frac{5}{7} [/tex]
So they are not equivalent
C.[tex] \frac{3}{12} and \frac{6}{18} = \frac{1}{4} and \frac{1}{3} [/tex]
They are not equivalent too.
D.[tex] \frac{4}{10} and \frac{12}{30} = \frac{2}{5} and \frac{2}{5} [/tex]
And they are equivalent. SO the correct option is D .
