Question

Find the number that makes the ratio equivalent to 20:9.

__:27

Answer 1

60

Explanation:

You can kinda think it out by looking at the 9 and 27. Change 9 to 27 by multiplying by 3. So then, multiply 20×3 also.

20:9 is the same as

60:27

Or you can do some auto-pilot algebra, like this:

20/9 = x/27

crossmultiply.

9x = 540

divide by 9

x = 60

same answer either way!