Identify the value of x that makes each pair of ratios equivalent. 2. 5: 15 and x: 3 a.5 b.3 c.1

c.1

Step-by-step explanation:

5: 15   x:3

a:b   c:d   The ratios have to stay in proportion.  So if we multiply a and b by a certain number  they will equal c and d.  We just don't know what that number is yet.  Call it something.

a* something = c   and b* something =d

5 * something = x

15* something = 3

Solve for the unknown number we are multiplying by

Divide each side by 15

15/15 * something =3/15

something = 1/5

Now that we know what we are multiplying by, we can solve for x

So  5 * something = x

     5* 1/5 = x

            1 =x

c.1

Step-by-step explanation:

First, we must look at the two last ratio numbers of "5:15 and x:3".

This would be 15 and 3. 15 ÷ 3 = 5. So, now since the numbers were divided by 5, we then must divide the first digit (5) by 5.

5 ÷ 5 = 1

Therefore, 1 would be the correct answer.

-kiniwih426