Simplifying Ratios

50:20 in simplest form is:

90:45 in simplest form is:

10) 20:85 in simplest form is:

28:40 in simplest form is:

12:72 in simplest form is:

24:12 in simplest form is:

55:25 in simplest form is:

39:13 in simplest form is:

Write the ratio 300:550 in simplest form.

(Do not included any spaces in your answers.)