2. The clock in my lounge room is 10 minutes slower than the clock on my phone, which is 6 minutes slow. My tram always leaves 6 minutes early, although it is scheduled for 8:55am. It takes me 20 minutes to get to the tram stop. What time must I leave, according to my lounge room clock, in order to catch my tram?
To calculate the time you must leave according to your lounge room clock, you need to consider the differences in time between the lounge room clock, your phone clock, the tram's scheduled departure time, and the time it takes for you to reach the tram stop.
First, determine the actual time of the tram's scheduled departure by adding the 6 minutes early departure time to the scheduled time:
8:55 AM + 6 minutes = 9:01 AM
Next, calculate the actual time on your phone by adding the 6 minutes that it is slow to the scheduled departure time:
9:01 AM + 6 minutes = 9:07 AM
Now, calculate the actual time on your lounge room clock by adding the 10 minutes that it is slower to the time on your phone:
9:07 AM + 10 minutes = 9:17 AM
Finally, subtract the 20 minutes it takes for you to get to the tram stop from the lounge room clock time:
9:17 AM - 20 minutes = 8:57 AM
According to your lounge room clock, you must leave at 8:57 AM in order to catch your tram.