दो धनात्मक पूर्णांकों का अंतर 69 है। यदि इन पूर्णांकों का अनुपात 2 : 5 है, तो इन पूर्णांकों का योग क्या होगा?

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)?