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The Row Boat Puzzle: A Fun Riddle on Speed and Time

Dive into "The Row Boat Puzzle," a captivating brain teaser that challenges your logical thinking. A man rows a boat upstream and downstream in a river with a current. When rowing from point A to point B, it takes him 6 minutes against the current, while the return journey takes 12 minutes. The puzzle invites you to calculate how long it would take him to row the same distance if there was no stream. Utilize the hints provided to find the speeds involved and unlock the solution. Can you solve this engaging riddle?

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The Row Boat Puzzle: A Fun Riddle on Speed and Time

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Presentation Transcript

  1. Pleaseturnoffyour computers……wewillplay a little game first

  2. The Row Boat Puzzle

  3. The Row Boat Puzzle • A man rows a boat in a river • The man must row from point A to point B • The water in the river steams in the direction from A to B, with constant speed • The man rows the boat with constant speed A B

  4. The Row Boat Puzzle • Due to the stream, it takes less time to row from A to B, than from B to A • It takes 6 minutes to row from A to B • It takes 12 minutes to row from B to A • QUESTION: How long will it take to row from A to B, if there was no stream…? A B

  5. The Row Boat Puzzle • Hint #1 • Call the speed of the rower R • Call the speed of the stream S • Total speed from A to B: R+S • Total speed from B to A: R-S • Total speed without stream: R

  6. The Row Boat Puzzle • Hint #2 • Distance = Speed x Time • The distance A to B is called L, then: L = (R + S) x 6 minutes L = (R – S) x 12 minutes • Find S expressed by R

  7. The Row Boat Puzzle • Hint #3 • S = 1/3 R, so by inserting this: L = 4/3 R x 6 minutes L = 2/3 R x 12 minutes • We must then solve L = R x ? minutes

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