Allied & ICAR Exam Bank • ALLIED_1834 MCQ • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

A train running at 90 km/h crosses a platform double its length in 36 seconds. The length of the train is:

Options:

  • (A) 300 m
  • (B) 250 m
  • (C) 350 m
  • (D) 200 m

Answer Key:

A

Step-by-Step Solution & Explanation

Speed = $90 \times 5/18 = 25$ m/s. Total distance in 36 s = $25 \times 36 = 900$ m. Let train length be $L$, platform is $2L$. $3L = 900 \implies L = 300$ m.
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