https://www.wikitechy.com/interview-questions/boats-and-streams/a-motorboat-whose-speed-is-15-km-hr-in-still-water-goes-30km-downstream-and-comes-back-in-four-and-a-half-hours-the-speed-of-the-stream-is/ Interview Questions Mon, 06 Sep 2021 05:28:23 +0000 hourly 1 https://wordpress.org/?v=6.9