"Today`s Bagger" joke

A man walks past a beggar every day and gives him Rs. 10 and that Continues for a year.
Then suddenly the daily donation changes to Rs. 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 Rs. 5.
"What`s going on now?" the beggar asks his donor.
"First you give me Rs. 10 every day, then Rs. 7, 50 and now only Rs. 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."