GED Math Test #7

Question 1

For the first month of business, Harry intends to use the revenues from his lemonade stand as shown in the table above. How much profit does he make if he buys $70 worth of lemons?

Accepted Answer

$30

Answer

If $70, the amount spent on extra lemons, represents 35% of Herbert's wages, then 1% equals $70/35 = $2, and 15% equals $2 X 15 = $30.

Question 2

The following data is provided: 122, 130, 145, 154, 165, 178,
Which number, when added to the set, will increase the mean?

Accepted Answer

150

Answer

A data set's mean, or average, is calculated by adding all data points and dividing the total by the number of data points. A value greater than the mean must be added to the data set to boost the mean. Calculate the mean, then choose the answer option that is greater than it:
6 = 894 6 = 149 Mean = (122 + 130 + 145 + 154 + 165 + 178)
Only 150 of the options available will raise the mean.

Question 3

A triangle's sides are equal to integral numbers of units. What is the minimal value for the triangle's perimeter if two sides are 4 and 6 units long?

Accepted Answer

13 units

Answer

A triangle's sides must all be greater than zero. The lengths of the two shorter sides must add up to more than the third side's length. Because we're seeking for the shortest perimeter, we'll assume the longer of the two speclength sides, which is 6, is the triangle's longest side. The third side must then equal or exceed 6 - 4 = 2. Because the sides are all integral numbers, the final side must be three units long. As a result, the minimal perimeter length is
4+6+3 = 13 units.

Question 4

David owns a house cleaning business and is required to provide pricing quotes to potential clients. He calculates his price by starting with a $25 base rate and adding $8 for each bathroom and $4 for each additional room.
Which of the following describes his price quotation formula if he uses P for the price, B for the bathroom, and R for other rooms?

Accepted Answer

P = 25 + 8B + 4R

Answer

The entire cost will be equivalent to the price quote, P. Given that there is a $25 base charge, we can start by writing P = $25 in the price quote. Our pricing quote now reads P = $25 + $8B, where P represents the base rate of $25 and B represents the cost of each restroom. Finally, add $4 for each additional room, R, and the final price is P = $25 + $8B + $4R, or P = 25 + 8B + 4R.

Question 5

Female students make up 46% of the student body at University School. How many male pupils attend this high school if the total number of students is 1250?

Accepted Answer

675

Answer

If females make up 46 percent of the entire student population, males make up 100 percent of 46 percent = 54 percent of the student population. To calculate the number of male pupils, multiply 54 percent by the total number of students.
Remember that 54 percent equals 54 divided by 100, or 0.54:
0.54 * 1250 = 675

GED Practice Test

GED Practice Test

GED Math Test #7