Question

2 tableand 3 chair together coast Rs 2000 whereas 3 tables and 2 chair togeather coast Rs 2500 find the total coast of 1 table and 5 chair

Answer 1

LET TABLE NO. BE X
AND LET CHAIR NO BE Y
1ST CONDITION
2X+3Y=2000 ....................(1)
2ND CONDITION
3X + 2Y= 2500...............................(2)
ADD(1)AND(2)= 5X+5Y=4500
                               X+Y=900..............(3)
SUBTRACT(1)AND(2)
                                         =  - X+Y= - 500......................(4)

                       ADD(3)AND(4)
                    2Y = 400
                   Y=200
PUT IN (3)= X+Y=900
                  X+200=900 
                    X= 900-200
                   X=700
TABLE = X=700
CHAIR= Y=5Y =5(200)=1000
TOTAL= 700+1000
                = 1700