Ratios And Proportions

Question 1

Define Ratio and exemplify

Answer 1

A way to compare quantities, such as weight, size, or cost

Can be in verbal form ( x to y )
Can be colon ( x : y )
Fraction (x/y)

• its actually easiest to calculate in fraction form?

Question 2

Exemplify and define Proportion

Answer 2

An equation involving two equal ratios
- used to figure out a distance, time, rate, cost , etc
- must put ratios in fraction form and cross multiply, while leaving each new product on each side of equation

Ex 3x 18
4 = 12

 36x = 72

      X=2

Question 3

Define and exemplify Rate

Answer 3

Special kind of ratio that expresses ‘something per something’
- usually related to distance, time, cost
- pay attention to units may, have to convert
- uses proportions properties to solve, just pay attention to units to convert

Question 4

Define ratio as a percentage and exemplify

Answer 4

Ratio out of 100, again we use proportions

% Part
100 = Whole

⭐️ Make sure you read question on what its looking for

Question 5

Define and exemplify Percentage Change

Answer 5

Expresses how much change occurred with new value compared to old value
- usually involves sales and merchandise

% Change Amount of Change
100 = Original Value

⭐️ make you read question, may ask for difference or sum of the actual value change instead, vice versa