A man walks past a beggar every day and gives him
$10 and that continues for a year. Then suddenly the
daily donation changes to $7.50.

"Well," the beggar thinks, "it's still better than nothing." A year passes in this way until the man's daily donation suddenly becomes $5.

"What's going on now?" the beggar asks his donor.
"First you give me $10 every day, then $7.50 and now
only $5. What's the problem?"

"Well," the man says, "last year my eldest son went
to university. It's very expensive, so I had to cut
costs. This year my eldest daughter also went to
university, so I had to cut my expenses even
further."

"And how many children do you have?" the beggar asks.
"Four," the man replies.
"Well," says the beggar, "I hope you don't plan to
educate them all at my expense."