दो संख्याएं क्रमशः तीसरी संख्या से 30% और 20% कम हैं। पहली दो संख्याओं का अनुपात क्या है?

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)?