Brain Teasers
Hat in the River
A river is flowing downstream at 15 mph relative to the shore. A rowing team is practicing rowing and at first they row upstream (against the current). They can only go 1.5 mph relative to the shore at this rate. The guy at the back end of the boat is wearing a hat when they begin, but after a while his hat falls into the water (and floats) and it is 15 minutes before they notice it. They then instantaneously reverse direction and row back to catch up with the hat, rowing with the same strength or power they were rowing with before.
How long will it take them to catch up with the hat as it is pushed downstream by the current ?
How long will it take them to catch up with the hat as it is pushed downstream by the current ?
Answer
15 MinutesHide Answer Show Answer
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