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If x = a, y = b is the solution of the equations x – y = 2 and x + y = 4, then the values of a and b are, respectively
(A) 3 and 5 (B) 5 and 3
(C) 3 and 1 (D) –1 and –3

NCERT Class X
Mathematics - Exemplar Problems

Chapter _PAIR OF LINEAR EQUATIONS IN TWO VARIABLES

Answer :

(c)3 and 1 because                                                                                                             

a-b=2

a+b=4

adding both equations

2a=6

a=3

substitute the value of a in eq1

a-b=4

3-b=4

b=1


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