Correct Answer - Option 4 :
Quantity A > Quantity B
Quantity A:
Let the speed of the second goods train be M m / s.
⇒ (350 + 200) / 165 = 72 × 5 / 18 – M
⇒ M = 20 – 10 / 3
⇒ M = 50 / 3 m / s
Now,
(200 + A) / 18 = 50 / 3
⇒ A = 100m
Length of the platform is 100m.
Quantity B:
Side of a square = √121 = 11 m
⇒ Perimeter of square = 11 × 4 = 44 m
Circumference of a circle = 44 m = 2 × 22 / 7 × radius of a circle
Radius of a circle = 7 m
Area of a Circle = 22 / 7 × 7 × 7 = 154 sq.m
One diagonal of a rhombus = 11 m
⇒ Area of rhombus = 154 = ½ × 11 × other diagonal
⇒ Another diagonal of a square = 28m
∴ Quantity A > Quantity B.