GCSE Maths Practice: simplifying-ratios

\( \begin{array}{l}\text{Which of the following ratios simplify to } 2:3\text{?}\end{array} \)

Select all correct options:

\( \text{10:15} \) \( \text{8:12} \) \( \text{6:9} \) \( \text{4:6} \)