Question

Question :-

The difference between boys and girls in a class
is 12. If the girls are 60%. How many boys are there?

Thank you.​

Answer 1

Answer:

here is your answer

Step-by-step explanation:

Difference b/w boys & girls = 12

Girls are 60%

To find

Number of boys.

Solution

Let the number of boys be b, number of girls be g.

➝ Total number of students = (b + g)

According to 1st case :

⟼ g - b = 12

⟼ g = b + 12 ..(i)

According to 2nd case :

➺ g = 60% of (b + g)

➺ b + 12 = 60/100 of (b + b + 12)

➺ b + 12 = 3/5 of (2b + 12)

➺ b + 12 = (6b + 36)/5

➺ 5b + 60 = 6b + 36

➺ 6b - 5b = 60 - 36

➺ b = 24

Therefore,

There are 24 boys in the class.

Answer 2

Given

• Difference b/w boys & girls = 12
• Girls are 60%

To find

• Number of boys.

Solution

• Let the number of boys be b, number of girls be g.

➝ Total number of students = (b + g)

According to 1st case :

⟼ g - b = 12

⟼ g = b + 12 ..(i)

According to 2nd case :

➺ g = 60% of (b + g)

➺ b + 12 = 60/100 of (b + b + 12)

➺ b + 12 = 3/5 of (2b + 12)

➺ b + 12 = (6b + 36)/5

➺ 5b + 60 = 6b + 36

➺ 6b - 5b = 60 - 36

➺ b = 24

Therefore,

There are 24 boys in the class.