Question

cost of 2 tables and 3 chairs is Dollar 705 . if the table cost dollar 40 rupees more than the chair, find the cost of the table and the chair?

Answer 1

let the cost of table be x and the chair be y,

2x+3y=705 be the first eq.
x=y+40
x-y=40 be the second eq.
multiply 2 in eq (2)
2x+3y=705
2x-2y=80(subtract the eq.(2) from eq (1)
you will get y=625
similarly x=625+40=665
cost of table =665
cost of chair =625
I don't know whether it is correct. check it up!!