单项选择题

See the diagram on the following page for information to answer the questions.
At Tyler High School, there are twice as many girls as boys on the yearbook staff. At one staff meeting, the percentage of girls attending was twice the percentage of boys. What percent of those attending the meeting were boys

A．20
B．25
C．30
D．33
E． 50
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单项选择题
Last year Leo bought two paintings. This year he sold them for $2000 each. On one, he made a 25% profit, and on the other he had a 25% loss. What was his net loss or profit
A．He broke even.
B．He lost less than $100.
C．He lost more than $100.
D．He earned less than $100.
E． He earned more than $100.
单项选择题
In 1997, of the unemployed males 20 years of age or older, what percent were unemployed because they had lost their jobs
A．35%
B．50%
C．60%
D．75%
E． 90%
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