Ratios and Rates

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A) From the diagram what would be the two term ration of circles to squares?

7:3

B) Compare the number of squares to the total

3:10

part-to-part ratio:

When you are comparing one part of a group to another part.

part-to-whole ratio

When you are comparing one part of a group to the whole group.

RATIOS

RATES

Unit Rate

We say your heart beats 70 beats per minute, which is also 70 beats/ min. The beats/ min is called the unit rate.

Example: Brandon runs 260m in 5s

260/5 = 52 m per secs

Comparing Prices Using Unit Rates

(Oz) turn into a decimal

(16oz) = 0.16 | (64oz) = 0.64

Price/size

3.30/0.16 = 20.63/oz

8.60/0.64 = 13.44/oz

The better buy is the 16oz of peanut butter.