When I left home for office on a particular day my father’s watch showed 7:00 PM, and when I reached my office my watch showed 7:50 PM. Next day in the morning when my father’s watch showed 6:00 AM, my watch showed 7:30 AM. If my father’s watch runs at normal speed and my watch gains 5 minutes per hour, then the time taken by me to reach my office from home, on that day, was closest to

1) 15 minutes
2) 13 minutes 38 seconds
3) 13 minutes 50 seconds
4) 14 minutes 50 seconds

• 3) 13 minutes 50 seconds
  
  In 11 hrs, my watch gained 55 mins.
  It mean at 7PM, the diff in my watch and father's watch was 90-55=35 mins.
  so my watch was showing 7:35PM at start from home and shows 7:50 PM when I reached office.
  Time taken during journey = 15*60/65= 180/13 mins or approx 13 mins 50 secs
• 11 years agoHelpfull: Yes(1) No(0)