Which ratios are equivalent to the given ratio?

15 to 30

(multiple choice)

- 1/2

- 7 : 15

- 6/3

- 4 to 2

- 10 : 20

15 to 30 means 15:30, or 15/30. This simplifies to 1/2, which is 1:2.
Just find every answer choice that is equal to 1/2.

1/2 = 1/2

7:15 = 7/15 ≠ 1/2

6/3 = 2/1 ≠ 1/2

4 to 2 = 4:2 = 4/2 = 2/1 ≠ 1/2

10:20 = 10/20 = 1/2

So the correct choices are 1/2 and 10:20.

Hope this helps!