Question

1) In a school there are 84,236 students. If half of the students are girls, then how many boys are there?​

Answer 1

Answer:

⋆ QUESTION ⋆

In a school there are 84,236 students. If half of the students are girls, then how many boys are there?

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⋆ GIVEN ⋆

there are 84,236 students and half are girls

⋆ SOLUTION ⋆

we already know that of the students were girls

so total students ÷2 = girls

= 84,236 ÷ 2

= 42118

if half of girls were 42118 so similarly number of boys must be equal to girls

so number of boys in school were = 42118

hope this will help you~~~

Answer 2

Step-by-step explanation:

If 40% of students are girls then 60% are boys, 60/40 = 1,5

Let’s make a system of 2 equations, X being the amount of girls and Y being the amount of boys :

Y = 1,5 X } E1

Y = X+8 } E2

Since Y=Y then :

1,5 X = X + 8

1,5 X - X = 8

0,5 X = 8

X = 16

Now we know there are 16 girls in the class, so we’ll

replace X with 16 in E2 :

Y = 16 + 8 = 24

VERIFICATION : 24/16=1,5 = 60/40

There are 16 girls and 24 boys in the class, which makes 40 students in a class.

I Hope you understood