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!

B: 8%

Step-by-step explanation:

It asks for percentage of total students, so we add the male and female student totals for a total of 150 students. We also add the numbers of those that are left handed for a total of 12. We divide 12 by 150 (12/150) to get the decimal, 0.08, which is 8%.