Let the cost of one chair be Rs x and that of a table be Rs y.
Then, 3x + 2y = 700 .....…(1)
5x + 3y = 1100 ..............(ii)
x = 100
\(\therefore\) Putting x = 100 in (1), we get
300 + 2y = 700 \(\Rightarrow\) 2y = 400 \(\Rightarrow\) y = 200
\(\therefore\) Cost of one chair = Rs 100, Cost of one table = Rs 200
\(\Rightarrow\)Cost of 2 chairs and 2 tables = 2 × Rs 100 + 2 × Rs 200
= Rs 200 + Rs 400 = Rs 600.