Question

NAOMI WORKED OUT FOR 5 DAYS . SHE WORKED OUT FOR THE FOLLOWING HOURS- 8,6,5,9,8 . WHAT IS NAOMI'S AVERAGE HOUR OF WOKING OUT?​

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.