A watch which gains uniformly is 3 minutes slow at noon on a Sunday and is 4 min. 48 secs. fast at 2p.m. on the following Sunday. When was it correct?

• Watch has covered 7 minutes 48 secs ( or 468 secs) extra in 170 hrs
  it would have covered 180 secs (or 3 mins) extra in 180*170/468 = 65.38 hrs after sunday noon.
• 12 years agoHelpfull: Yes(2) No(2)