Question

Cost of table is more then chair by $350.lf the cost of 3 chairs and 4 table is $ find the cost of a table ?

Answer 1

Answer:

Let the cost of chair=x

And the cost of table=y

ATQ

5x+3y=350-(1)

3x+5y=370-(2)

Add both (1) and (2)

5x+3y=350

3x+5y=370

__________

8x+8y=720

__________

8(x+y)=720

x+y=720/8

x+y=90

x=90-y

Solve it in equation (1)

5(90-y)+3y=350

450-5y+3y=350

100=2y

y=50

Put the value of y in x=90-y

x=90-50

x=40

:.Cost of table=$50

:.Cost of chair=$40

Cost of 1 table and 2 chair

=50+2(40)

=130

So the answer is $130