Question

Numbaer of boys and girls in a class in the ratio 7:5 . The number of boys is 8 more than the number of girls . Then find the total class strength

Answer 1

Given :

• Ratio of boys and girls is 7:5
• The number of boys is 8 more than the number of girls.

To find :

• The total class strength.

According to the question,

Let the ratio be 7x and 5x

Now,it is given that the numberof boys is 8 more than the number of girls.

So,the equation formed :-

→ Number of boys = Number of girls + 8

→ 7x = 5x + 8

→ 7x - 5x = 8

→ 2x = 8

→ x = 8 ÷ 2

.°. x = 4

_________________.....

Value of 7x (Number of boys)

→ 7x

→ 7 × 4

→ 28

__________________....

Value of 5x (Number of girls)

→ 5x

→ 5 × 4

→ 20

__________________.....

So,the total strength of the class

→ Number of boys + Number of girls

→ 28 + 20

→ 48 students.....(Answer)

Answer 2

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