- In a high school with 500 students, 15% of the students are freshmen. If
50 additional students enroll in the school, how many of those students
would have to be freshmen for the number of freshmen to be 20% of the
student body?
A 10
B 25
C 35
D 100
E 175 - In a company of 800 employees, 25% hold administrative positions. How
many administrative employees would have to be added for the number of
administrative employees to be 40% of the total number of employees?
A 80
B 120
C 200
D 320
E 400 - If Bob invests $10,000 at y percent simple annual interest for 5 years,
which of the following represents the amount of interest he will have
gained after 5 years?
A 10,000(1 + y)^5
B 10,000(y)5
C 10,000( 100 y)5
D 10,000(y)^5
E 10,000(y 5 )- In Boronia, all purchases are taxed between 10% and 15%, depending on
the type of item purchased. If Bob paid $30 tax for a certain item, which
of the following could equal the pretax cost of the item? (Indicate all
that apply.)
A 150
B 175
C 210
D 270
E 330
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