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exis [7]
3 years ago
10

What is the total number of students in Ms. perron class

Mathematics
2 answers:
kvasek [131]3 years ago
7 0

Answer:

24 total students

Step-by-step explanation:

multiply 25 times 18 to get 450 then divide 450 by 75 then you get 6, which is the total amount of girls, so 6 + 18 = 24

VARVARA [1.3K]3 years ago
4 0

x = number of students

75% of x = number of boys

(75/100)*x = 18

0.75x = 18

x = 18/0.75 <--- divide both sides by 0.75 to isolate x

x = 24

So there are 24 students in the class

Note how 18/24 = 3/4 = 0.75 = 75% represents the percentage of boys

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elixir [45]

Answer:

30

Step-by-step explanation:

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8 0
3 years ago
The sum of two numbers is 100 and their difference is -20. What are the two numbers?
salantis [7]

Answer:

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Step-by-step explanation:

<u>step:1</u>

Let 'x' and 'y' are two numbers

given data the sum of two numbers is 100

x+y = 100......(1)

Given difference of two numbers are

x - y = -20 ......(2)

<u>Step :2</u>

solving the equation (1) and (2)

adding the equations (1) and (2)

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cancelling 'y' terms are

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dividing "2" on both sides, we get

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<u>Step :3</u>

substitute x = 40 in equation (1)

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subtracting "40" on both sides, we get

40 + y - 40 = 100 -40

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Final answer:-

The two numbers are x = 40 and y= 60

3 0
3 years ago
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vfiekz [6]

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liubo4ka [24]

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