A total profit of ₹21,800 is to be distributed amongst A, B and C such that A : B = 4 : 15 and B : C = 9 : 3. The share (in ₹) of B in the profit 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)?