Question

A.B तथा C की औसत दैनिक आय ₹ 450 है। यदि A तथा को औसत दैनिक आय ₹400 एवं B तथा C की औसत आय ₹ 430 है, तो B की दैनिक आय होगी..
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Answer 1

The daily income of B is 50/-

• 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, it is given that,

The daily income of A and C is ₹ 400 and that of B and C is ₹ 430.

Let the daily incomes of A, B and C be x, y and z respectively.

Then, x + z = 400 and y + z = 430.

Again, x + y + z = 450.

Or, (400 - z) +y + z = 450

Or, y = 50.

Then, z = 430 - 50 = 380.

Then, x = 400 - 380 = 20.

Hence, the daily income of B is 50/-

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