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​

Answer 1

Answer:

56

Step-by-step explanation:

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

2) Therefore 7x = 5x + 8, 2x = 8, x = 4.

3) No. of boys = 7x + 8 = 7 × 4 + 8 = 36.

4) No. of girls = 5x = 5 × 4 = 20.

5) Therefore, Total Strength = 36 + 20 = 56.

Answer 2

Answer:

girls = 6

Step-by-step explanation:

boys and girls ratio = 7:5

boys = 8

girls = 8/? = 7:5 means 7/5

(cross multiple)

8×5 = 7×y. (y - is a supposing number of girls)

40 = 7y

7y = 40

y = 40/7

y(girls) = 5.71

girls no. = 6 (u think that there is ans is 5.71 but in below u write 6 ,is that because when a number after is more than 50 is converted into next digit , similar in this we wrote 6 )

sorry that's my fault I thought no. of boys is 8 .

sorry again