Question

A train 300 m long crossed a platform 900 m long in 1 minute 12 seconds. The speed of the train (in km/hr) is?

• A. 45
• B. 50
• C. 54
• D. 60

Answer 1

The correct option is D 60

$\text{Total distance covered}=(300+900)m=1200m.\text{Time taken}=1min.12sec=72sec.\text{Speed}=\left(\frac{1200}{72}\right)m/sec.=(\frac{1200}{72}\times \frac{18}{5})km/hr=60km/hr$