Question

10 20
20 40
30 60
40 80

Divide to prove each ratio is equivalent.

Answer 1

They’re all equal to 1/2

Answer 2

Divide each ratio set by 10. You'll get the following for each one:

1/2

2/4, which simplifies to 1/2.

3/6, same thing.

4/8, same thing.

Each ratio is equivalent because they all simplify to 1/2, because the first number (for ex, 30) is a half of the other number(ex. 60) + (if that makes any sense)

Hope this helps! :)