the cost of 3 tables and 5 chairs is rs 2000 whioe the cost of 5 table and 7 chairs cost rs 3200.find the cost of a table and a chair
Answers
Answered by
0
Answer:
let the price of table=x
price of chair=y
cost of 3 table &5 chairs=2000
3x+5y=2000 ---(1)
cost of 5 table & 7 chairs=3200
5x+7y=3200 ----(2)
(1)×(2)‐---->15x+25y=10000 ---(3)
15x+21y=9600 ---(4)
(3)-(4) ----->4y=400
y=400÷4=100
substitute the value of y in (1)
3x+5y=2000
3x+5×100=2000
3x+500=2000
3x=2000-500
3x=1500
x=1500÷3=500
Similar questions