Master Wang went to the furniture factory and bought a total of 19 tables and chairs. 35 per table,

There are x tables and 19-x chairs. It took a total of 35x+20 (19-x)=440.

So x = (440-20 19) 15 = 4, 4 for tables and 15 for chairs.

Set, buy a table x pieces, then, buy a chair 19-x pieces, thus, the column equation is as follows:

35x+(19-x)×20=440

Solve the equation to obtain: x=4

19-x=19-4=15

Solution: The number of chairs to buy:

15 handfuls. Number of tables to buy: 19-15 = 4.

440 yuan to buy up to 22 chairs, 12 tables.

Let's say you buy 18 chairs, and you have at least 2 tables to buy with the money you have left.

Buy 17 chairs and spare money to buy at least 2 tables.

Buy 16 chairs and spare money to buy at least 3 tables.

Buy 15 chairs, spare money to buy 4 tables, all the money is gone.