Amy was sitting in front of a clock. When she observed it for the first time, the hour hand was at a minute mark and the minute hand was six minutes ahead it.
After some time, she observed the clock again to find that the hour hand was exactly on a different minute mark and the minute hand was seven minutes ahead of its time.
Can you calculate how much time has elapsed between two observations?
When Amy first observed, the time was 1:12 and when she noticed again, the time was 3:24. Hence, 2 hours and 12 minutes have passed between two observations.