The relationship between the number of pencils and the number of pens in Sophie's pencil case can be represented using the ratio 6:10. Which of the following ratios is not equivalent to this ratio?

A.

3:5

B.

9:15

C.

12:20

D.

24:30

What is the equivalent ratio to 5:10

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2a/b = w. how do i solve for a in terms of b and w

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