Which quantity is proportional to 45⁄3? Check all that are true. 90⁄10 90⁄6 15⁄1 135⁄6 30⁄1

15/1 is proportional to 45/3

To solve this, turn everything into decimals. Once you've done that, it reads this way:

Which quantities are proportional to 15?

9

15 - - aka 90/6

15 - - aka 15/1

22.5

30

The only provided quantities that are proportional are 90/6 and 15/1.