and . What is the value of and ?

**(A) ** and

**(B) ** and

**(C) ** and

**(D) ** and

**(E) **None of the above

We are given two equations and each equation consists of two variables. Let's solve these equations by substitution method.

**(1)**

** (2)**

From equation **(1)**, we can say that

**(3)**

Putting this in equation **(2)**, we get

Putting value of in equation **(3)**, we get

Therefore, and

Hence, the answer is **(D)**.