A multiplication table. In the row labeled 3, the numbers 3, 6, 9, 12, 15, 18, 21, 23, and 27 are highlighted. In the row labeled 7, the numbers 7, 14, 21, 28, 35, 42, 49, 56, and 63 are highlighted.
Here the rows for 3 and 7 are highlighted.
Which ratio is equivalent to 3:7?
9:21
12:30
18:28
21:27