All Algebra 1 Resources
Example Questions
Example Question #9 : How To Find The Whole From The Part With Percentage
is of what?
To figure out the value, translate the question into an equation, knowing that "is" means equals, and "of" means multiply:
To solve, turn the percentage into a decimal:
now divide both sides by 0.48
Example Question #9 : How To Find The Whole From The Part With Percentage
is of what number?
To determine the whole, translate the question into an equation, knowing that "is" means equals and "of" means multiply:
convert the percentage into a decimal:
divide both sides by 1.8
Example Question #11 : Whole And Part
is of what number?
To find the whole from the part given a percentage, we divide our known part by the decimal equivalent of the percentage, which we find by dividing the percentage by one-hundred:
Therefore, is of
Example Question #3171 : Algebra 1
If of the students in Mrs. Roger's 5th grade class received an "A" on the math test, and the number of students who received an "A" was 12, how many students are there in Mrs. Roger's 5th grade class? Round to the nearest student.
If of the students in Mrs. Roger's 5th grade class received an "A" on the math test, and the number of students who received an "A" was , how many students are there in Mrs. Roger's 5th grade class? Round to the nearest student.
This is question is asking us to find the whole from a percentage and a part. We know that students make up of the whole class. We need to find the total number of students in the class. The trickiest part of this is the setup.
We can start by thinking of it like so
Meaning that of the whole (W) is equal to .
Then we use some basic rearranging to divide both sides by
So there are students in the class.
Note, there cannot be students, because we must round down. is not or greater, so we cannot round up to .
Example Question #13 : How To Find The Whole From The Part With Percentage
of the eggs gathered in the hen house were brown and there were of them. How many eggs in total were gathered?
Since eggs account for of the total batch, we can determine the total number of eggs as such:
Example Question #14 : How To Find The Whole From The Part With Percentage
For helping run the snack bar Rodney was paid of total earnings for the day. If Rodney was paid , what was the total earnings for the snack bar?
Dividing of the total earnings by will determine the total amount of money earned:
Example Question #11 : Whole And Part
Todd has paid for of the semester's tuition at the University of Alaska. If Todd still owes , what is the total cost of the semester's tuition? Round to the nearest dollar.
If Todd has already paid of his tuition, then he still owes of the total cost. is of the total cost of tuition, which we can use to calculate the full cost:
Example Question #16 : Whole And Part
Oscar must pay of his annual income in back taxes. The amount taken from Oscar's monthly salary totals $722.85. How much does Oscar make annually before pay deductions?
First of all, it should be understood that since of Oscar's annual earnings are taken, than of his monthly salary is also taken. By that reasoning, is of Oscar's monthly salary, which we can then use to determine his annual earnings:
Example Question #17 : Whole And Part
Charlie paid the monthly rent for his Manhattan penthouse of . If the cost of rent accounts for 62% of Charlie's income, how much does he make annually?
We can determine Charlie's monthly earnings given the amount he spends in rent and the percent of his income that it consumes:
With this value we can now determine Charlie's annual income:
Example Question #15 : How To Find The Whole From The Part With Percentage
30% of what number is 6?
When we don't know the value of a number, we assign it a variable. In this case,
30% of what number is 6
can be written as
30% of x is 6
Now, we will write 30% as a decimal. We get
0.3 of x is 6
We know when we see "is" that means equals. So,
0.3 of x = 6
We also know when we are finding percentages of numbers, we multiply. So,
Now, we solve for x. We divide both sides by 0.3. We get
Therefore, 30% of 20 is 6.
Certified Tutor