A total of 300 apples are distributed among A, B, and C in such a way that three times the number received by A is equal to four times that of B and nine times that of C. The number of apples received by B is:

If all the girls in school B and school C participated in the function, find the ratio between the number of boys in school B and school C who participated in the function.

Which of the following examples represents an inverse proportional relationship (reverse movement)?