Question

60. What will be
2. the boys and girls in a school are in the ratio 9:5 if the total strength of
the school is 448. Find the number of girls.
Verify 108 : 72 :: 129 : 86​

Answer 1

Step-by-step explanation:

9:5 convert into fraction and then multiply by 448

answer will come

Answer 2

Answer:

1. Given that, boys and girls in as school is in the ratio 9 : 5

Hence, let the number of boys be 9x and that of girls be 5x.

Also, it is given that, there are 448 students in total.

ie, 9x + 5x = 448

ie, 14x = 448

ie, x = 448/14

ie, x = 32

Therefore, the number of girls = 5x = 5 x 32 = 160 girls

2. Given that, 108 : 72 :: 129 : 86

We know that, in a proportion,

Product of means = Product of extremes

Here, Product of means = 72 x 129 = 9288  ......................eq (1)

And, Product of extremes = 108 x 86  = 9288 ...................eq (2)

ie,  eq (1) = eq (2)

Hence, the result is verified.

HOPE THIS HELPS.............