• Numerical Ability - Quadratic Equations
Question

9x – 15.45 = 64.55 + 4x, √(y+153) – 6 = 7

  • A) X > Y
  • B) X < Y
  • C) X ≥ Y
  • D) X ≤ Y
  • E) X = Y or relation cannot be established
Solution

E. X = Y or relation cannot be established
Explanation:
9x – 15.45 = 64.55 + 4x
9x – 4x = 64.55 + 15.45
5x = 80 => x= 16
√(y+155) – 6 = 7
√(y+155) = 13
Squaring on both sides
y + 153 = 169
y = 16

E. X = Y or relation cannot be established
Explanation:
9x – 15.45 = 64.55 + 4x
9x – 4x = 64.55 + 15.45
5x = 80 => x= 16
√(y+155) – 6 = 7
√(y+155) = 13
Squaring on both sides
y + 153 = 169
y = 16
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