Question

The number of boys and girls in a class are in the ratio 7:5. The number of boys is 8 more than the number of girls. What is the total class strength?

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Answer 1

Step-by-step explanation:

Let the total strength of class be x then,

7x - 5x = 8

=> 2x = 8

=> x = 8/2

Hence, x = 4

If x is 4 then,

7x = 7 × 4 = 28

5x = 5 × 4 = 20

Hence, the total number of students = (number or boys + girls)

=> (28 + 20) = 48

Answer) Hence, the total strength of class is 48 students.

Answer 2

Answer:

Total class strength is 48

Step-by-step explanation:

let the number of boys and girls respectively be 7x and 5x

ATS, no. of boys is 8 more than no. of girls

7x = 5x + 8

-8 = 5x - 7x

-8 = -2x

x = -8/-2

x = 4

TOTAL CLASS STRENGTH = 7x + 5x

= 7(4) + 5(4)

= 28 + 20 = 48

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