64. The variable x varies directly as y and x = 80 when y is 160. What is y when x is 64? 64. The variable x varies directly as y and x = 80 when y is 160. What is y when x is 64? August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related