TEC Engineering Web

CAN YOU ANSWER THE PUZZLER?

The Floating Hat

Crew Team


The Loredo bridge and the High River bridge are 1 mile apart. The local crew team starts rowing upstream at the High River bridge. As the crew team passes under the Loredo bridge, the coxswain's hat falls into the river. Ten minutes later, the coxswain notices. He immediately turns the boat around and has the crew go back to get it, rowing at the same constant rate. By the time the crew team reaches the hat, they are back at the High River bridge.

How fast is the river flowing?

Answer

Since the crew's speed is measured relative to the river and the hat is floating on the river, the time it takes the crew to get back to the hat is also 10 minutes. So, in 20 minutes the hat travelled 1 mile down the river. Therefore, the river's speed is 1 mile/20 minutes or 3 miles per hour.





TEC on FacebookTEC on LinkedIn

Your local
TEC Engineering office
is located in


[+] Change

TEC Engineering linesheet.

View our
current newsletter



Engineering Marvel #1

Engineering Marvel #2

Engineering Marvel #3

Engineering Marvel #4

Engineering Marvel #5

Engineering Marvel #6

Engineering Marvel #7

Engineering Marvel #8

Engineering Marvel #9

Engineering Marvel #10

Engineering Marvel #11

Engineering Marvel #12

Engineering Marvel #13

Engineering Marvel #14

Engineering Marvel #15


Copyright © TEC Engineering 2010. All rights reserved.