**Concept: The question tests on basics of Percentage (Profit/Loss)**

**Solution: **

Let Price of the table = T and that of a chair = C

Price of table T = 350 + C ... (1)

Also 7T + 7C = 4550 or T + C = 650 ... (2)

Putting (1) in (2) 350 + 2C = 650

2C = 300 or C = 150

Therefore price of a table = 150 + 350 = 500

% Decrease = DifferenceLarger Number∗100=500−150500∗100=70DifferenceLarger Number∗100=500−150500∗100=70%

**Option B**