How to find percentage from a fraction - SAT Math
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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?
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%.
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%.
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What is 
as a percentage?
What is
Convert the improper fraction 
to the mixed numeral 
or as the decimal 
. 
as a percentage is 
Convert the improper fraction
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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?
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?
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:
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:
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Convert the following fraction to a percent, rounding to the nearest tenth:
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 
, which is the percent.
Reduce the fraction.
Set up the proportion such that some number is over 100.
Solve for
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What is the closest percent equal to the fraction 
?
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 
.
The percent is a number over 100. Set up the proportion to find the unknown value.
The closest answer is
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Express 
as a percent.
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 
.
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
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Solve each problem and decide which is the best of the choices given.
There is a bag with 
green marbles, 
red marbles, 
purple marbles, and 
blue marbles. What is the probability that a red marble is randomly chosen from the bag?
Solve each problem and decide which is the best of the choices given.
There is a bag with
To find the probability of a red marble being randomly chosen, you have to divide the number of red marbles by the total number of marbles.
There are 
red, and 
total,
thus, creating the fraction
.
To find the percentage, simply divide 
by 
and multiply the result by 
to get 
.
To find the probability of a red marble being randomly chosen, you have to divide the number of red marbles by the total number of marbles.
There are
thus, creating the fraction
To find the percentage, simply divide
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Determine the approximate percentage given the fraction 
.
Determine the approximate percentage given the fraction
Because a fraction is a part of a whole 
, set up a proportion.
The fraction 
is approximately 
.
Because a fraction is a part of a whole
The fraction
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