Question

The cost of 1 table amd 4 chair is 3,400.If the table cost ¥900 more than a chair , find a cost of a chair and a table
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Answer 1

Step-by-step explanation:

Let the cost of one table =x

And cost of one chair =y

⇒4x+3y=2250

⇒3x+4y=1950

Equation (1) × 3 : 12x+9y=2250×3

Equation (2) × 4 : 12x+16y=1950×4

Subtract two equations ;

⇒7y=1050

⇒y=150

⇒x=450

⇒cost of one table =x=450

⇒cost of one chair =y=150

⇒cost of 2 chairs and 1 table =2x+y=2(450)+150=1050