The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is:	Choose the correct choice from the following options:  A) 3500  B) 3900  C) 3750  D) 3840  E) 3950
Let the cost of a chair and that of a table be Rs. x and Rs. y respectively.   Then, 10x = 4y or y =	(5/2)x.   15x + 2y = 4000   15x + 2 x	(5/2)	x = 4000   20x = 4000   x = 200.   So, y =(5/2)x 200= 500.   Hence, the cost of 12 chairs and 3 tables = 12x + 3y   = Rs. (2400 + 1500)   = Rs. 3900.   Answer is 3900.
<result>B</result>
The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is: