Six tables and twelve chairs were bought for 7800 Rs. If the average price of a table is 750 Rs. Then what would be the average price of a chair?
[A]150 Rs.
[B]175 Rs.
[C]250 Rs.
[D]275 Rs.

275 Rs.
Average cost of a chair = x Rs.,
then, x $\times$ 12 + 6 $\times$ 750 = 7800
=> 12x = 7800 – 4500 = 3300
$=> x = \frac{3300}{12} = 275\ Rs.$
Hence option [D] is correct answer.