Arithmetic Aptitudes › Time and Distance › Question #4724
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QDeccan Queen cruises at an average speed of 80 kilometres per hour from Bombay to Pune, and at a speed of 100 kilometres per hour on the return route. What is the train's average speed during the course of its journey?

ID: #4724 Time and Distance 138 views
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#4724Q ID
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Time and DistanceTopic
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  • A 88(8/9)km/hr ✔ ✖
  • B 89(8/9)km/hr ✔ ✖
  • C 900/ 7 ✔ ✖
  • D None ✔ ✖
Correct Answer: Option A

Explanation


Average speed = 2ab/a+b = (2x80x100)/180 = 800/9 = 88 8/9km/hr
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