55. When two quantities are related in such a manner that if one increases and the other decreases, then they always vary inversely. 55. When two quantities are related in such a manner that if one increases and the other decreases then they always vary inversely. August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related