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Brainteaser
The man on the paddle boat
An environmental activist wants to hang a banner to send a
message to stop the over-fishing of tuna fish. He thinks that
hanging the banner on a fishing boat anchored near a
fisherman's village is the perfect spot to send his message.
The man uses his small paddle boat to approach the larger
fishing boat unnoticed. He plans on climbing up the fishing boat
using a rope ladder that hangs on its side.
To his dismay, the bottom of the ladder is three feet above his
extended arms. There is nothing on the paddle boat he can
stand on to extend his reach. He cannot jump up to grab the
ladder because his boat is small and light, and will become
unsteady in the water.
Then, he figures that the tide is rising at the rate of one foot per
hour. His paddle boat will rise with the tide and, he thinks, if he
waited long enough he should be able to reach the bottom of
the ladder.
How many hours does he have to wait at sea for the tide to rise
high enough so that he could reach the ladder?
The answer is at the bottom of this page.
The man on the paddle boat
An environmental activist wants to hang a banner to send a
message to stop the over-fishing of tuna fish. He thinks that
hanging the banner on a fishing boat anchored near a
fisherman's village is the perfect spot to send his message.
The man uses his small paddle boat to approach the larger
fishing boat unnoticed. He plans on climbing up the fishing boat
using a rope ladder that hangs on its side.
To his dismay, the bottom of the ladder is three feet above his
extended arms. There is nothing on the paddle boat he can
stand on to extend his reach. He cannot jump up to grab the
ladder because his boat is small and light, and will become
unsteady in the water.
Then, he figures that the tide is rising at the rate of one foot per
hour. His paddle boat will rise with the tide and, he thinks, if he
waited long enough he should be able to reach the bottom of
the ladder.
How many hours does he have to wait at sea for the tide to rise
high enough so that he could reach the ladder?
The answer is at the bottom of this page.
Answer:
The man will not be able to grab the rope ladder with his extended arms
no matter how long he waits at sea because both his paddle boat and the
fishing boat will rise with the tide at the same time, so the bottom of the
ladder will remain three feet above his reach.
The man will not be able to grab the rope ladder with his extended arms
no matter how long he waits at sea because both his paddle boat and the
fishing boat will rise with the tide at the same time, so the bottom of the
ladder will remain three feet above his reach.
Mga Palaisipan
Sino sila?
Word challenge
The blind man
Fun with numbers
Sari-sari, madadali lang
Ang lubid
Sa gitna ng dagat
Paano nalaman ni Josh?
Paano nakatakas sa leon?
Nasaan ang parola?
What was wrong with the elevator?
The raisin bread
The tragedy
The man and the oil lamp
The man on the paddle boat
The driver's license
The amazing box
The triangle
Why did the bridge fall
Who was the suspect?
Sino sila?
Word challenge
The blind man
Fun with numbers
Sari-sari, madadali lang
Ang lubid
Sa gitna ng dagat
Paano nalaman ni Josh?
Paano nakatakas sa leon?
Nasaan ang parola?
What was wrong with the elevator?
The raisin bread
The tragedy
The man and the oil lamp
The man on the paddle boat
The driver's license
The amazing box
The triangle
Why did the bridge fall
Who was the suspect?