Question 1209700
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Edwin, let me explain you.


Every time, you think about the students and professors.
It is your paradigm.


Turn the chessboard over.


In this activity, there are no students and professors in the radius of 3000 miles around.


There are business interests, only.


Simply, these guys fill their website/websites with these quasi-"problems".


That is all.


Probably, long time ago this problem did exist in the form as you mentioned
in your post - but now they modified it into <U>this</U> form in their post
to get a "new problem", visually different from the old one.


They do understand nothing in Math, and getting understanding is not their goal.


Their goal is to reach their business interest - nothing more.

Later, they will sell their web-site and will reach money.



From here - their non-sensical problems that flow like a stream, undistinguished one from another.



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Edwin, did you read novels / (short stories) by the American writer O'Henry (1862-1910) ?


He wrote them somewhen the early  20th  century.


They all are perfect, first class soft humor.


Especially his stories about Jeff Peters as a personal magnet.


Highly recommend.  If not find in the library, try find them online.


About O'Henry, see this Wikipedia article

https://en.wikipedia.org/wiki/O._Henry