N at a speed of 20km/h reaches his office 10 mins late. Next time he increases his speed by 5km/hr, but is still late by 4 mins. What is the distance of office from his house? :/

Any easy method to solve this thing??

• Aveek
• 15809 Views
• 4 Answers

• 10 km

  • Divya
  • 14 Jul
  • 0 Comment

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• Differences in speeds as x/20-x/25= difference in time in minutes i.e 6/60 , so it is 10kms

  • Habiba
  • 06 Jul
  • 0 Comment

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• x/20 - x/25 = 6/60 because x is distance 20 and 25 are two speeds given and since the time difference is 6 min (10-4) so 6/60 in minutes rest you can solve yourself :)

  • Kapil
  • 09 Dec
  • 0 Comment

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• By increasing his speed by 25%, he will reduce his time by 20%. (This corresponds to a 6 minutes drop in his time.)br /Hence, his time originally must have been 30 minutes. br /Thus required distance = 20 kmph * 0.5 hours = 10 km.

  • Shreya
  • 07 Dec
  • 0 Comment

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