Question

14. The cost of a TV set and a DVD Player together is Rs 27,800. The cost of the
DVD Player is Rs 1600 less than twice that of the TV set. Find the cost of both
The perimeter of a rectangle is 30 cm long If​

Answer 1

The cost of the TV set is 8733.3 Rs. and that of the DVD Player is 15866.6 Rs.

• An equation is said to be linear if the maximum power of the variable is consistently 1. Another name for it is a one-degree equation. A linear equation with one variable has the conventional form Ax + B = 0. In this case, the variables x and A are variables, while B is a constant. A linear equation with two variables has the conventional form Ax + By = C.
• Each term in a linear equation has an exponent of 1, and when this algebraic equation is graphed, it always produces a straight line. It is called a "linear equation" for this reason.

Here, according to the given information, we are given that,

The cost of a TV set and a DVD Player together is Rs 27,800.

let the cost of the TV and the DVD player be x and y respectively.

Then, x + y = 27800.

Again, y = 2x - 1600

Then, 2x + x - 1600 = 27800

Or, 3x = 26200

Or, x = 8733.3 Rs.

Then, y = 15866.6 Rs.

Hence, the cost of the TV set is 8733.3 Rs. and that of the DVD Player is 15866.6 Rs.

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