Question

F 510 A 660 E 690 B 540 D C 570 630 What is the difference between the number of students from schools C and E​

Answer 1

Answer:

In the first case

Number of boys =660×

22

13

=390

Number of girls =660×

22

9

=270

Let the number of boys who left the school be x.

According to the question,

⇒

270+30

390−x

=

5

6

390−x=360

x=390−360=30.