Question

If 2 tables and 4 chairs cost ₹2,800, then the cost of 5 tables and 10 chairs will be ______.

पर्याय

• ₹8,400

• ₹7,000

• ₹7,500

• ₹11,200

Answer 1

If 2 tables and 4 chairs cost ₹2,800, then the cost of 5 tables and 10 chairs will be ₹7,000.

Explanation:

Let the cost of a table be T and of a chair be C,

Given:

2T + 4C = 2800     ...(1)

We want 5T + 10C,

Multiply equation (1) by 2.5:

(2.5)(2T + 4C) = (2.5)(2800)

5T + 10C = 7,000

So the cost of 5 tables and 10 chairs is ₹7,000.