25. If 12 pumps can empty a reservoir in 20 hours, then time required by 45 such pumps to empty the same reservoir is ______ hours. 25. If 12 pumps can empty a reservoir in 20 hours then time required by 45 such pumps to empty the same reservoir is ______ hours. August 5, 2021 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related