SAT Math : How to find percentage from a fraction
Study concepts, example questions & explanations for SAT Math
All SAT Math Resources
Example Questions
Example Question #1 : Fractions And Percentage
What is 
Convert the improper fraction 
Example Question #462 : Arithmetic
A family with 6 children, aged 4, 4, 5, 7, 12, and 13 are moving to a new home. They all want the same bedroom, so the parents have a lottery. Each child places their name in once for every year of age (the four year olds each put their name in 4 times, the seven year old puts his name in 7 times, etc.) What is the probability of the chosen child being 4 years old?
It is most likely that the chosen child will be the oldest child.
None of the available answers
First, we will determine the total number of ballots:
Since there are two four year olds, and this question is asking the probability of the chosen child being four, the probability is:
Example Question #2 : Fractions And Percentage
Three hens each lay 20 eggs for a farmer. Two-fifths of the first hen's eggs are brown. One-fourth of the second hen's eggs are brown. Seven-tenths of the third hen's eggs are white. What percentage of all the eggs are brown?
The first hen lays 8 brown eggs: 2/5 * 20 = 8
The second lays 5 brown eggs: 1/4 * 20 = 5
The third lays 6 brown eggs: 3/10 * 20 = 6
Add up the brown eggs and divide by 60, the total number of eggs:
19/60 = 0.31666667 = 31.67%, or 32%.
Example Question #21 : Percentage
What is the closest percent equal to the fraction 
The percent is a number over 100. Set up the proportion to find the unknown value.
The closest answer is 
Example Question #21 : Percentage
Convert the following fraction to a percent, rounding to the nearest tenth:
Reduce the fraction.
Set up the proportion such that some number is over 100.
Solve for 
Example Question #21 : Percentage
Express 
To turn this fraction into a percent, let's write it as a decimal first.
Now, let's set up a proportion to make this a percent.
Therefore, our answer is 
All SAT Math Resources
