Question : A goods train 350 m long passes through a tunnel of 1250 m in 80 seconds. What is the speed of the train?
Option 1: 72 km/hr
Option 2: 64 km/hr
Option 3: 78 km/hr
Option 4: 56 km/hr
Answer (1)
16th Jan, 2024
Correct Answer: 72 km/hr
Solution :
Total distance = 350 + 1250 = 1600 m
Total time = 80 s
Speed = $\frac{\text{total distance}}{\text{total time}}$
= $\frac{1600}{80}$
= 20 m/s
= $20 × \frac{18}{5}$
= 4 × 18
= 72 km/hr
Hence, the correct answer is 72 km/hr.
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