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sp2606 [1]
4 years ago
7

There are 300 students in the eighth grade. The ratio of girls to boys is 3 to 2. What percent of the students are boys?

Mathematics
2 answers:
Nadya [2.5K]4 years ago
4 0
The answer would be D
Bezzdna [24]4 years ago
4 0
For ratio questions, add the numbers on each side and use that as a denominator to find fractions:
If the ratio of girls to boys is 3:2, 3+2=5, so 2/5 of students in the 8th grade are boys. 2/5 can be written as 40/100 if you multiply both the numerator and denominator by 20, and 40/100 is 40%. Therefore, the answer is B.
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2.5(12.75x + 24.50) = 188.75
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Answer:

Step-by-step explanation:

First, in order to get rid of the parenthesis, you need to multiply 2.5 with whatever is in the parenthesis.

Multiply 2.5 on each side of the equation like this:

(12.75 x 2.5) (24.50 x 2.5) =188.75

Once you're finished, you should get 61.25 and 31.875x =188.75

Now in order to find 'x' you will need to subtract 61.25 to each side of the equation like this:

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So now your equation should look like this:

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You have to divide 31.875 by each side now.

Once you divide them, your final answer should be 4.

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Serggg [28]
This Is very simple.

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This is the new equation needed to solve for m.
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4 years ago
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