Subject
Quantitative Aptitude
Topic
Speed & Distance
If a train runs at 40 kmph, it reaches its destination late by 11 minutes but if it runs at 50 kmph, it is late by 5 minutes only. The correct time for the train to complete its journey is:
If a train runs at 40 kmph, it reaches its destination late by 11 minutes but if it runs at 50 kmph, it is late by 5 minutes only. The correct time for the train to complete its journey is:
ক)
13 minutesখ)
15 minutesগ)
19 minutesঘ)
21 minutesExplanation
Let the required time = T min. Then, distance covered in T + 11 min at 40 km/hr = distance covered in T + 5 min at 50 km/hr. ⇒ 40 ( T + 11 ) / 60 = 50 (T + 5 ) / 60Related questions
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