1.

If the cost of 2 tables and 3 chairs is Rs. 500, then find the cost of 8 tables and 12 chairs?1. Rs. 22002. Rs. 20003. Rs. 30004. Rs. 1800

Answer» Correct Answer - Option 2 : Rs. 2000

Given:

The cost of 2 tables and 3 chairs is Rs. 500

Concept Used:

If we have a linear equation in two variable and the required answer will be the multiple of the value of equation and a constant term then we don't need any other linear equation to find the answer

Calculation:

Let the cost of a table and a chair be Rs. x and Rs. y respectively

Now, according to question

2x + 3y = 500 ----(i)

and we have to find the value of 

8x + 12y

Now, if we do (i) × 4, we get 

4 × (2x + 3y) = 4 × 500

⇒ 8x + 12y = 2000

Hence, the price of 8 tables and 12 chairs is Rs. 2000


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