If Sara can read 15 pages in 10 minutes, how long will it take her to read 45 pages?
A. 20 minutes
B. 30 minutes
C. 50 minutes
D. 40 minutes
Enrique weighs 5 pounds more than twice Brendan's weight.
If their total weight is 225 pounds, how much does Enrique weigh?
A. 125 pounds
B. 152 pounds
C. 165 pounds
D. 115 pounds
Loral received all her grades for the semester (in parentheses) along with the weight for each grade, shown below.
Weight 45% = 3 tests (80%, 75%, 92%) 25% = final (88%) 15% = paper (91%) 15% = 2 oral quizzes each worth 25 points (22, 19)
What is her final grade?
A. 85
B. 79
C. 86
D. 88
Convert 250 centimeters to kilometers.
A. 0.0025 km
B. 0.025 km
C. 0.250 km
D. 2.50 km
In a sale, all prices are reduced by 40%.
Calculate the original price of an article whose sale price is $42.
A. $72
B. $58.80
C. $105
D. $70
If 42.8 kg is divided into two parts, in a ratio of 7/2, how many kg is the smaller share?
A. 9.51 kg
B. 12.22 kg
C. 0.856 kg
D. 21.4 kg
Brad plans to leave instructions with his broker to sell all of his shares in a particular company if the value of its stock rises more than 10% above the current price, but to purchase additional shares if the stock's value falls more than 10% below its present value. The stock is currently selling for $73.50 a share.
Which expression represents the interval, n, between which the broker should neither buy nor sell any shares of the company's stock for Brad?
A. 69.83 < n < 77.18
B. 73.60 < n < 73.60
C. 66.15 < n < 80.85
D. 63.50 < n < 83.50

The pie chart shows the percentage of computers using a given web browser when they visited the Wikimedia Commons site over the period of one month.
If 500 computers used Opera during that time, what was the total number of computers that visited the site?
A. A total of 5,000 computers visited the site.
B. A total of 2,500 computers visited the site.
C. A total of 100,000 computers visited the site.
D. A total of 10,000 computers visited the site.