Let the cost of 1 table be Rs. x and the cost of 1 chair be Rs. y.
4x + 5y = 1000... (1)
CP table = 4x
Chair = 5y
SP Table
\( \Large4x \left( 1 + \frac{1}{10}\right) = \frac{44x}{10} \)
SP chair
\( \Large5y \left( 1 + \frac{1}{5}\right) = 6y\)
Now, SP - CP = Profit
So, \( \Large \left( \frac{4x}{10} - 4x \right) + 6y - (4x - 5y) = 120 \)
= > \( \Large\frac{4x}{10} + y = 120 \).... (2)
From (1) and (2), we get
X = 200