Question

79. The number of boys and girls in a class
is in the ratio 7:5. The number of boys
is 8 more than the number of girls. The
total number of students in the class is:
1) 38
2) 48
3) 56
4) 64​

Answer 1

Answer:

here is your answer

Step-by-step explanation:

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

According to the given condition, we have

Number of boys = Number of girls +8

⇒7x=5x+8

⇒7x−5x=8 ....[Transposing 5x to LHS]

⇒2x=8

⇒x=

2

8

=4

Therefore, number of boys =7×4=28 and number of girls =5×4=20

So, total number of children in the class =28+20=48.

Hence, the class strength is 48.

Answer 2

Answer:

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