Speed , time and distance practice question for Railways, SSC. Review the correct answer and explanation, then continue with related practice below.
A bullet train covers a fixed distance in 30 minutes at an average speed of 240 km h. Due to track maintenance, it needs to be diverted, increasing the distance by 20%. If the train needs to arrive at its destination on time (i.e., in 30 minutes), what should its new average speed be in km h?
Correct Answerसही उत्तर
C. 288 km hC. 288 किमी घंटा
Explanationव्याख्या
Since the travel time remains constant at 30 minutes, speed is directly proportional to distance.
The distance increases by 20%, so the required speed must also increase by 20%.
New speed: = 240 + 20% of 240 = 240 + 48 = 288 km
h Hence, the correct answer is 288 km
h.
चूँकि यात्रा का समय 30 मिनट ही रहता है, इसलिए गति दूरी के सीधे समानुपाती होगी।
दूरी में 20% की वृद्धि हुई है, इसलिए आवश्यक गति में भी 20% की वृद्धि होगी।
अतः सही उत्तर 288 किमी
घंटा है।
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