Question 633138
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Hi,
 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?
 {{{4*150 + 450}}} = rs. 1050