If an outlet pipe empties a full tank in 20 hrs then part of tank emptied in one hour. Math, Time and Work Problems Leave a comment 0 Views A.3?20 B.2?5 C.1?10 D.1?20 Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related 2019-01-29 Pakquiz Share Facebook Twitter