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UPSC 2007: Amit starts from a point A, walks to another point B and then returns from B to A by his car, taking a total time of 6 hours 45 minutes. If he had driven both ways in his car, he would have taken 2 hours less. How long would it take for him to walk both ways?
(a)7 hours 45 minutes
(b)8 hours 45 minutes
(c)8 hours 30 minutes
(d)8 hours 45 minutes
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Not attemptedCorrect Answer: (d) 8 hours 45 minutes
Let the one–way distance be d km, walking speed w km/h and car speed c km/h. Given d/w + d/c = 6.75 h and 2d/c = 4.75 h (car both ways). Hence d/c = 2.375 h and d/w = 6.75 – 2.375 = 4.375 h. Walking both ways takes 2d/w = 8.75 h = 8 h 45 min, i.e. option (d). ([jagranjosh.com](https://www.jagranjosh.com/articles/ias-prelims-general-studies-solved-question-paper-2007-1307667428-1?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2007 Science & Technology question?▼
The correct answer is option (d): 8 hours 45 minutes. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Quantitative Aptitude question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2007, GS Paper 1, as Question 147. It falls under Science & Technology > Quantitative Aptitude.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Quantitative Aptitude?▼
UPSC has asked 178 questions from Quantitative Aptitude (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.