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 strength of the class​

Answer 1

Answer:

Let the ratio be x.

Number of boys = 7x

Number of girls = 5x

According to question, Number of boys = 5x+8

So, 7x = 5x+8

7x-5x = 8

2x = 8

x = 8/2

x = 4

Number of boys = 7x = 28

Number of girls = 5x = 20

Total strength of class = 28+20 = 48

Step-by-step explanation:

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Answer 2

Answer:

48

step by step explanation:

Let the number of boys be 7x and the number of girls be 5x.

According to the condition:

7x = 5x +8

7x - 5x = 8

2x = 8

X =8/2

X= 4

Therefore,

The number of boys = 7x= 7 × 4 = 28

28and the number of girls = 5x = 5×4=20

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