Question

3chairs and 5 tables cost rs 15500 and the cost of 5chairs and 2 tables is rs 11900 find the cost of 1 chair and 1 table and find the cost 4chairs and tables

Answer 1

let cost of chair be x and tables b y
then,3x+5y=15500.......I
and,5x+2y=11900.......II
multiply...I by 5 and ...II by 3 then
15x+25y=15500×5....III
15x+6y=11900×3.....IV
now eliminate equation III AND IV
you get value of x and y now calcylate the required value

Answer 2

3x+5y=15500(2)
5x+2y=11900(1)
(2)*5
15x+25y=77500(3)
(1)*3
15x+6y=35700(4)
(3)-(4)
19y=41200
y=41200÷19