Question

Which of the following, Option 1 or Option 2, is a proportion?

Option 1: 5/6=15/18

Option 2: 5/6=20/18

(1 point)

Answer 1

Option 1.

Check by cross-multiplying:
- Option 1: 5·18 = 90 and 6·15 = 90 → equal, so it's a proportion.
- Option 2: 5·18 = 90 and 6·20 = 120 → not equal, so not a proportion.