Comparing Quantities Using Ratios

Comparing 3 quantities

Comparing three quantities means making sure all the numbers can be divided by the same number

For example--> 12: 24: 6.. all these numbers can be divided by the same number.

We divide by the same number to make it the SMALLEST number possible!

Multiple Choice

How do I find the SMALLEST RATIO for 12:24:6

• divide all the numbers by 2

• divide all the numbers by 3

• divide all the numbers by 6

Multiple Choice

Which ratio is comparative to 15:20:10

• 5:4:2

• 3:4:2

• I don't know

Comparative quantities can also work backwards--like solving a puzzle

If you know what ONE answer is, you can find the others!

Multiple Choice

what is the equivalent ratio to 2:3:9

• x 6

• 6:9:12

• x4

• 8:12:36

Fill in the Blanks

Multiple Choice

find the ratio equivalent to 6:7;8

• X3

• 3:21:24

• 18:21:24

• 24:21:18