SAT Math : Percentage
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Example Questions
Example Question #1 : How To Find Percentage
On average, professional poker player Ben wins 6 out of 10 games. If a win brings in $75, how many games should he play to cover his rent of $625?
14
23
19
30
5
14
Put into an equation where x is the number of games, 0.6 * x * 75 = 625. X = 13.9, the answer is 14.
Example Question #1 : Other Percentage
What percent of 
Set up a ratio where 
Example Question #3 : Other Percentage
In a jar of 240 coins, 20 percent are nickels and 5 percent are dimes. How many coins are not nickels or dimes?
75% of the coins are not nickels or dimes. This means that 
Example Question #4 : Other Percentage
What number is 125% of 120?
Verbal cues include "of" and "is." Of means multiplication and is means equals
So the equation to solve becomes
Example Question #5 : How To Find Percentage
What percent of 250 is 20?
Verbal cues include "of" and "is." Of means multiplication and is means equals
The equation to solve becomes 
Example Question #11 : Other Percentage
What number is 30% of 90?
Verbal cues include "is" and "of." "Is" means equals and "of" means multiplication.
So the equation to solve becomes
Example Question #12 : Other Percentage
If the length of a rectangle is increased by 50% and with width of the same rectangle is decreased by 50%, what is the effect on the area of the rectangle?
It is unchanged
It is decreased by 50%
It is increased by 25%
It is increased by 50%
It is decreaed by 25%
It is decreaed by 25%
This is a good question to use random numbers. Lets use 100 and 10 as the lengths. That means the area = 100 x 10 = 1000
If we increase the length of the side measuring 100 by 50% = 150
If we decrease the length of the other side 50% = 5
Area = 150 x 5 = 750
We see that the area decreased by 250 or 25% decrease in area!
Example Question #13 : Other Percentage
If 80 percent of x is 200, what is 60 percent x?
200
225
250
150
175
150
Example Question #14 : Other Percentage
Seventeen percent of some number is 34. What is this number?
None of the available answers
The algebraic expression is:
Example Question #15 : Other Percentage
What number is 125% of 60?
90
66
60
75
80
75
Translate this into a mathematical equation:
x = 1.25 * 60
x = 75
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