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Mrs. Bendit’s 1st Block class has 28 students. There are 7 girls in the class. What percent of boys are in the class?

Sagot :

andrewlibylina

Answer:

Boys: 75%

Girls: 25%

Step-by-step explanation:

Total: 28 Students: 100%

7 Girls in clas

28(total)-7 (girls)= 21 Boys in class

__________________

If we divide the amount  boys OR girls ( depending on which gender) after the toal and move the decimal to the right twice after dividing) we will get our answer.

Formula:

(Amount of Boy or girls) = x

X/28

So since we are trying to get the percentages of boys, we will replace X with the amount of boys

21/28 = .75 ( then move the decimal to the right TWICE) =  75  

Then you should get your percentages: 75%  Also if your lookings for girls percentages, you basically subtract 75 ( boys percentages) with the total percentages ( 100) then you should get your answer for the girls: 25%

Answer: 75%

Step-by-step explanation:

First, the boys in the class are21 since 28-7 is 21,

So, since our denominator in 21/28 is 28, we could adjust the fraction to make the denominator 100. To do that, we divide 100 by the denominator:

100 ÷ 28 = 3.5714285714286

Once we have that, we can multiply both the numerator and denominator by this multiple:

[tex]\frac{21 x 3.5714285714286}{28 x 3.5714285714286}[/tex] =[tex]\frac{75}{100}[/tex]

Now we can see that our fraction is 75/100, which means that 21/28 as a percentage is 75%.

We can also work this out in a simpler way by first converting the fraction 21/28 to a decimal. To do that, we simply divide the numerator by the denominator:

21/28 = 0.75

Once we have the answer to that division, we can multiply the answer by 100 to make it a percentage:

0.75 x 100 = 75%

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Hope this help :)

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