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There are 105 members of the high school marching band. For every 3 boys there are 4 girls. Which proportion represents how many boys are in the marching band?
A.
B.
C.
D.
To find:The proportion which represents the number of boys in the marching band.
Answer to Problem 3STP
A.
Explanation of Solution
Given information:There are 105 members of the high school marching band. For every 3 boys there are 4 girls. Calculation:Let the number of boys in the marching band be b .
For every 3 boys there are 4 girls.
So, out of 7 members there are 3 boys.
The proportion is represented as,
Thus, the proportion which represents the number of boys in the marching band is
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High School Math 2012 Common-core Algebra 1 Practice And Problem Solvingworkbook Grade 8/9
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