Allied & ICAR Exam Bank • ALLIED_1675 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

Two trains of lengths 150 m and 200 m travel in opposite directions on parallel tracks at 54 km/h and 72 km/h respectively. The time taken for them to completely cross each other is:

Options:

  • (A) 10 seconds
  • (B) 12 seconds
  • (C) 14 seconds
  • (D) 8 seconds

Answer Key:

A

Step-by-Step Solution & Explanation

Relative speed = $54 + 72 = 126$ km/h = $126 \times 5/18 = 35$ m/s. Total distance = $150 + 200 = 350$ m. Time = $350 / 35 = 10$ seconds.
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