Question

2 chair & 1 table can purchase of rupee 170 & 5 chairs & 4 tables can be purchase of rupee 530 so what will the value of one chair?

Answer 1

let the cost of one chair be =x
" " " " " table be =y
atq
2x+y=170------1
5x +4y=530----2
from 1
y=170-2x
putting in 2
5x +4×(170-2x)
5x+680-8x=530
-3x=-150
x=50
y=70