Answers

2016-03-16T06:20:40+05:30
Let the cost of cahir and table be x and y
   10x   =  4y
       y   =  5/2 x ____________1

15x + 2y    =  4000
15x  + 2×5/2x= 4000
     20x           = 4000
         x            = 200
 
 from equ 1
      y = 5/2 × 200
        = 500

the cost of 12 chairs and 3 table
    12x +13y
 =Rs (2400+1500)
= Rs 3900
 
 

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