Proportion / Ratio / Rate
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SSAT Upper Level Quantitative › Proportion / Ratio / Rate
Julie can read 
Explanation
First, figure out how long it takes Julie to read 1 page.
It takes Julie 
It will take Julie 
Express 
Explanation
Ratios take the form of numerator:deminator when in colon form.
In a high school, the ratio of freshmen to seniors is 
Explanation
Set up the following proportion, with 
Now, cross-multiply and solve for 
In a high school, the ratio of freshmen to seniors is
Explanation
Set up the following proportion, with
Now, cross-multiply and solve for
Express
Explanation
Ratios take the form of numerator:deminator when in colon form.
Julie can read
Explanation
First, figure out how long it takes Julie to read 1 page.
It takes Julie
It will take Julie
In a biology class, 
Explanation
The ratio of sophomores to freshmen in the class can be expressed by the fraction 
Now, simplify this fraction.
That fraction can also be expressed as 
In a biology class,
Explanation
The ratio of sophomores to freshmen in the class can be expressed by the fraction
Now, simplify this fraction.
That fraction can also be expressed as
A popular word game uses one hundred tiles, each of which is marked with a letter or a blank. The distribution of the tiles is shown above, with each letter paired with the number of tiles marked with that letter. Notice that there are two blank tiles.
If the tiles marked with an "E" are removed, and the rest are placed in a box, then what is the ratio of consonant tiles to vowel tiles in the box?
Note: for purposes of this problem, "Y" is considered a consonant.
Explanation
Out of the 100 tiles, there are nine "A" tiles, twelve "E" tiles, nine "I" tiles, eight "O" tiles, and four "U" tiles.
If the "E" tiles are removed, there will be
The number of consonant tiles can most easily be found by adding the number of vowel tiles and blanks:
The rest of the tiles are consonant tiles; subtract from 100 to get
Therefore, the ratio of consonant tiles to vowel tiles in the box after removing the "E's" is
A popular word game uses one hundred tiles, each of which is marked with a letter or a blank. The distribution of the tiles is shown above, with each letter paired with the number of tiles marked with that letter. Notice that there are two blank tiles.
If the tiles marked with an "E" are removed, and the rest are placed in a box, then what is the ratio of consonant tiles to vowel tiles in the box?
Note: for purposes of this problem, "Y" is considered a consonant.
Explanation
Out of the 100 tiles, there are nine "A" tiles, twelve "E" tiles, nine "I" tiles, eight "O" tiles, and four "U" tiles.
If the "E" tiles are removed, there will be
The number of consonant tiles can most easily be found by adding the number of vowel tiles and blanks:
The rest of the tiles are consonant tiles; subtract from 100 to get
Therefore, the ratio of consonant tiles to vowel tiles in the box after removing the "E's" is