A nursing school enrolls 89 students, and 7 out of 8 are female. What percentage of the class is female?
87.5%
78%.
65.3%.
98%
Correct Answer : A
The ratio of females to students enrolling to nursing school is 7:8. So the percent of females in the class is:
\(\frac{7\ }{8\ }\ast100% =87.5%\)
Therefore, the class is made of 87.5% of females enrolling to a nursing school.
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Correct Answer is B
Explanation
Divide the numerator, 1 by the denominator, 5 as follows
Correct Answer is D
Explanation
The ratio 0.6:X=7:42 can be written in proportion as:
\(\frac{0.6}{X}=\frac{7}{42}\)
The value of X is determined by cross-products
\(0.6\ast42=7X \)
25.2=7X
Divide both sides by 7
\(\frac{25.2}{7}=\frac{7X}{7}\)
\(3.6=X\)
Thus, the value of X is 3.6
Correct Answer is A
Explanation
The number of packets of a balloon the mother should purchase is evaluated as follows
\(16\ children\ast\frac{15\ balloons}{1\ child}\ast\frac{1\ packet}{50\ balloons}=\frac{24}{5}=4.8\ packets\)
The mother will have to purchase 5 packets of balloons.
Correct Answer is A
Explanation
If the woman cuts her consumption by 75%, then she consumes 25% (100-75) of coffee. Then, the number of cups allowed to drink daily is
\(\frac{25}{100}\ast5\ cups=1.25\ cups\)
The number of ounces of coffee she is allowed to drink is determined by utilizing the relation, 1 cup=8 ounces as follows:
\(1.25\ cups\ast\frac{8\ ounces}{1\ cup}=10\ ounces\)
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