Ratio and Proportion: 0.6: X:: 7:42
X=2.4
X=0.6
X=1.2
X=3.6
Correct Answer : D
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
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Related Questions
Correct Answer is ["52"]
Explanation
First, determine the number of classes in a population of 6734 students
\(6734\ students\ast\frac{1\ class}{25\ students}=269.36\ classes\)
There are about 269 classes and if we assume 1 class to be represented by 1 teacher, then the number of teachers to be hired is:
Number of teachers to be hired=269-217=52 teachers
Thus, the school district will hire 52 teachers to supplement their staff of 217 teachers.
Correct Answer is A
Explanation
0.004 as a fraction is
\(\frac{4}{1000}=\frac{1}{250}\)
In ratio form 1/250=1:250
Thus 0.004 as a ratio is 1:250.
Correct Answer is ["2.4"]
Explanation
The ratio 240:X=80:0.8 to proportion equation becomes
\(\frac{240}{X}=\frac{80}{0.8}\)
Find value of X by cross-products
\(240\ast0.8=80X\)
\(192=80X\)
Divide both sides by 80
\(\frac{192}{80}=\frac{80X}{80}\)
\(2.4=X\)
Thus, X=2.4
Correct Answer is ["1132"]
Explanation
Use the Military time chart below to convert 11:32 AM to Military Time
From the chart above, 11:00 AM to Military is 1100 hrs, then it follows that 11:32 AM is 1132 hrs
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