A wall clock loses 10 minutes every 1 hour. In 1 hour by the wall clock , a table clock gets 10 minutes ahead of it. In 1 hour by the table clock an alarm clock falls 5 minutes behind it. In 1 hour of the alarm clock, a wristwatch gets 5 minutes ahead it. At noon, all 4 timepieces were set correctly. To the nearest minutes, what time will the wrist show when the correct time is 6 p.m. on the same day ?

• clearly,the wrist watch is accurate so it show 6p.m
• 13 years agoHelpfull: Yes(6) No(4)
• Slightly confusing
  The table clock is on time because after 1 hour wall clock lost 10 minutes and the table clock is 10 minutes ahead.
  The alarm clock loses 5 minutes from real time so after 1 hour in alarm clock the real time is:
  60 + 5*60/55 = 60 + 60/11 = 60*12/11
  The wrist watch is 5 minutes ahead of alarm clock so its
  60*12/11 - 65 minutes behind. = 5/11 minutes behind the real time.
  So in 6 hours the wrist watch is 6*5/11 minutes behind.
  To nearest minute, the wrist watch will show
  5.57pm
• 13 years agoHelpfull: Yes(2) No(6)
• wall clock = 10 min loses in 1 hour
  table clock = 10 min ahead of wall clock that's means it's showing right time
  now
  alarm clock =5 min falls behind table clock
  wristwatch=5 min ahead of alarm clock that's means it will show right time
  
  now come on ans
  we seen that wristwatch showing the right time so wrist show 6 pm on the same day
• 8 years agoHelpfull: Yes(0) No(1)