Dr. Jonson has a clock on his office wall. The clock lags 6 minutes behind every day. After how many days will it show the right time again?

See the answer

Answer: 120 days.
The clock will show the right time again after it lags by 12 hours. 12 hours contain 720 minutes. Therefore, the clock will show the right time again after 720/6 = 120 days.

Facebook Comments