Question

the num ber of boys and girls in the 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​

Answer 1

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Answer:

Let,

The number of boys = 7x and the number of girls =5x.

According to the condition,

7x = 5x + 8

2x = 8

x = 4

Therefore The number of boys = 7x = 7 × 4 = 28 and the number of girls =5x = 5 × 4 = 20.

Therefore total strength of the class = 28 + 20 = 48

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Answer 2

Answer:

48

Step-by-step explanation:

Let the number of boys = 7x

And the number of girls be = 5x

So, According to the question,

=> 7x = 8 + 5x

=> 7x - 5x = 8

=> 2x = 8

=> x = 8/2

=> x = 4

Therefore,

Number of boys = 7x = 7(4) = 28

Number of Girls = 5x = 5(4) = 20

Total Strength = 28 + 20 = 48