Q. There are 2 clocks one runs 1 min/hr faster and other runs 1 min/hr slower. When will the two clocks have time difference 1 hour?

• ans is 30 hrs
  in 30 hrs, the faster clock is 30 min ahead and the slower one 30 min behind...so,difference is 1 hr.
• 11 years agoHelpfull: Yes(37) No(0)
• the two clks have 1hr difference in 30hrs...1st clock runs 1 min faster and 2nd runs slower so when clock one shows 12.01, clock shows 11.59 and in the next upcoming hrs it will be 1.02 & 12.58,2.03 & 1.57 and so .It is seen tat difference is 2,4,6,...minutes so in 30hrs we get difference of 1 hour
• 11 years agoHelpfull: Yes(5) No(0)
• 1 day and 6 hr
• 11 years agoHelpfull: Yes(1) No(6)
• 24hr+6hr=30hr
• 11 years agoHelpfull: Yes(0) No(0)
• difference btw 2 clock is 2min in 1 hr
• 9 years agoHelpfull: Yes(0) No(0)
• In 1 hour there is a time difference of 1+1 min/hr.
  i.e 2 min difference is there in 60 min
  so, 1 min difference will be there in 60/2 min
  
  therefore, 60 min or 1 hour difference will be there in (60/2)*60=1800 min
  = 30 hours
• 7 years agoHelpfull: Yes(0) No(0)