Multiple choice

A person has to cover 6km in 45 minute. If he covers half of the distance in (2/3) time then what will be the speed of man for covering the remaining distance in remaining time? एक व्यक्ति को 6 किलोमीटर की दूरी 45 मिनट में तय करना है| यदि वह आधी दूरी (2/3) समय में पूरा करता है तो शेष दूरी को शेष समय में तय करने के लिए उस व्यक्ति की चाल क्या होगी?

  1. 3 lmph/ किमी./घंटा

  2. 8 lmph/ किमी./घंटा

  3. 12 lmph/ किमी./घंटा

  4. 15 lmph/ किमी./घंटा
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C Correct answer
Explanation

Total distance is 6 km in 45 minutes (0.75 hours). Half distance (3 km) is covered in (2/3) of 45 minutes = 30 minutes = 0.5 hours. Speed used = 3/0.5 = 6 kmph. Remaining 3 km must be covered in remaining 15 minutes = 0.25 hours. Required speed = 3/0.25 = 12 kmph.

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