Question

if 3 chair and 1 table cost rs 900 and 5 chair and 3 table cost rs 2100 then the cost of 4 chair and 1 table is ,..​

Answer 1

Answer:

1050

Step-by-step explanation:

3 chairs and 1 table cost rs.900 and 5 chairs and 3 table cost rs.2100

Let x and y represent the cost of a chair and a table respectively

 3x +  y = 900

 5x + 3y = 2100   |Multiplying the 1st Eq by 3 and subtracting from 2nd EQ

     -4x = -600

        x = 150, chair cost.  Table Cost is  rs. 450

and...cost of 4 chairs and 1 table is?

one chair = 150

one table = 450

so, 4 chairs = 150*4 = 600

     1 table = 450

Total price of 4 chairs and 1 table = 600+450 = 1050

Answer 2

Answer:

3x+y=900

5x+3y=2100

3(3x+y)=3(900)

9x+3y=2700

-5x-3y=-2100

4x=600

x=600/4=150

y=900-3x

=900-3*150=450

one chair=150

one chair=450