दो पूर्ण संख्याओं का अंतर 66 है। यदि दोनों संख्याओं का अनुपात 2 : 5 है, तो वे दो संख्याएँ कौन सी हैं?

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)?