All GED Math Resources
Example Questions
Example Question #441 : Ged Math
At a zoo, the ratio of birds to mammals to reptiles is 2 to 5 to 6. If there are a total of 195 birds, mammals, and reptiles, how many reptiles does the zoo have?
The number of reptiles cannot be determined from the information given.
To maintain the correct ratio of birds to mammals to reptiles, let be the number of birds, be the number of mammals, and be the number of reptiles.
We can then write the following equation:
Solve for .
Since the question asks for the number of reptiles, we will need to find the value of .
The zoo has reptiles.
Example Question #71 : Proportions And Percentages
If workers can paint square feet of wall in hours, how many hours would it take painters to paint square feet of wall if they work at the same pace?
If workers can paint square feet of wall in hours, that means each painter must paint square feet of wall in hours. Thus, each painter must paint square feet of wall in each hour.
Now, if each painter can paint square feet in one hour, then painters can paint square feet of wall in one hour. As the six painters can paint square feet in one hour, then it will only take them hours to paint square feet.
Example Question #74 : Proportions And Percentages
Sarah earns per week and a commission on all her sales. If Sarah sells worth of products in one week, what is her total paycheck for the week?
Start by finding the commission that Sarah earned.
Convert the percentage into a decimal:
Next, multiply this by the amount of products that Sarah was able to sell to find her commission.
Make sure that you rounded to the nearest cent.
Now, add the commission to the base pay to find her total paycheck.
Example Question #111 : Complex Operations
Emily is paid a weekly salary of . She is also given a commission on all the goods she sells during the week. If she earned in one week, what was the value of the goods she sold?
In order to find what the value of the goods she sold was, we need to first figure out the amount she earned from her commission. Do this by subtracting out the weekly base pay from her total pay.
Now, we know that must be the amount from the commission. Since Emily earns of her total sales as commission, this amount must also represent of the value of the goods she sold.
We can then set up the following equation. Let be the value of goods Emily sold.
Example Question #81 : Proportions And Percentages
The part, the whole, and the percent of a percentage problem can be related by the proportion statement
Set equal to the whole, and 19 and 95 equal to the part and the percent, respectively:
Set the cross-products equal:
Divide both sides by 95 to solve for :
,
the correct response.
Example Question #81 : Proportions And Percentages
9 is what percent of 3?
If we let and be a part and a whole of a percent problem, then the that is of is
.
In this problem, 9 is the part and 3 is the whole. Thus,
,
the correct response.
Example Question #441 : Numbers And Operations
What is 9% of 3?
, so 9% 0f 3 is equal to
,
the correct response.
Example Question #82 : Proportions And Percentages
In January, Sophia sold worth of goods at her store. In February, she sold worth of goods. What is the percent decrease from January to February?
Recall how to find the percent change for two values:
The new value in this case would be the value from February, and the old value would be the value from January.
Plug in the correct values to find the percent change:
Example Question #442 : Numbers And Operations
Among other things, a batch of cookies contains cups of flower to every cups of oats and cups of prune slices. If the batch contains a total of cups, how many cups of prune slices are there in the batch?
Based on the information provided, you know that a "standard" batch could be represented as:
This lets you set up a proportion:
The variable represents the number of cups of prunes in the full batch. Begin solving by cross-multiplying:
Then, just divide by :
The entire recipe contains 6 cups of prune slices.
Example Question #83 : Proportions And Percentages
In a sequence of numbers, the first value is . Every number after that is larger than the one that comes before it. What is the th element in the sequence?
Cannot be computed from the information provided
To imagine your sequence, think of a few values:
And so forth...
In the second element, you add one value of seventeen. In the third, you add two. This means that in the th, you will add a total of seventeens; therefore, you could write your value as: