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Quantitative Aptitude

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Quadratic Equations

Question
2 out of 10
 

In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :


I. 4x + 7y = 209 II. 12x −14y = −38



A if x <y

B if x >y

C if x ≤ y

D if x ≥ y

E if x = y

Ans. E 4x + 7y = 209 ------- (1)

12x – 14y = - 38

6x – 7y = - 19 ----- (2)

Adding both equations we get

10x = 190 x = 19

Putting this value in equation (1) we get

7y = 133, y = 19 So, x = y

Quadratic Equations Flashcard List

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