InterviewSolution
Saved Bookmarks
| 1. |
In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.I. 3X2 – 42X + 135 = 0II. 2Y2 – 42Y + 220 = 01. X > Y2. X < Y3. X ≥ Y4. X ≤ Y5. X = Y or the relationship between X and Y cannot be established. |
|||||||||||||||
|
Answer» Correct Answer - Option 2 : X < Y Calculation: I. 3X2 – 42X + 135 = 0 ⇒ X2 – 14X + 45 = 0 ----(∵ divide by 3 ) ⇒ X2 – 9X – 5X + 45 = 0 ⇒ X(X – 9) – 5(X – 9) = 0 ⇒ (X – 5) (X – 9) = 0 ∴ The value of X is 5, 9. II. 2Y2 – 42y + 220 = 0 ⇒ Y2 – 11Y – 10Y + 110 = 0 ----(∵ taking 2 as common) ⇒ Y(Y – 11) – 10Y(Y – 11) = 0 ⇒ (Y – 10) (Y – 11) = 0 ∴ The value of Y is 10, 11.
∴ X < Y. |
||||||||||||||||