Just like any other average. (1) Add the times. (2) Divide the results in this case by 2, since there are 2 different times.
Here is an example: Average of 3:40 and 1:30. Adding the times, you get: 4:70. Convert 60 seconds into one minute, and add to the minutes: 5:10. Divide by 2: half of 5 is 2, remainder 1 minute. (Convert this to 60 seconds again, and add to the remaining seconds. 70 seconds / 2 = 35 seconds, so the final result is 2:35. (In this particular case, you might avoid converting 60 seconds to 1 minute and back again, and thus saved some steps. But you can't always avoid this.)
3.75 min or 3min 45sec.
3min = 180s 180s + 24s = 204s
14 min + 3 min 30 sec _______________ 17 min 30 sec
Many people have done it, and everybody came up with a different answer. This was such a mysterious and unexpected result that Congress appropriated $4 million to NASA for a research project to determine why there were so many different answers. Eventually, NASA scientists were able to prove a new law of physics that exactly applied to this question, and astounded everybody. They called a press conference to announce their findings: "It depends on how fast you walk" ! Here are some randomly chosen speeds, and the corresponding time for 0.18 miles: 1 mile per hour: 10 minutes 48 seconds 2 mph: 5min 24sec 3 mph: 3min 36sec 4 mph: 2min 42sec 5 mph: 2min 9.6sec 1 furlong per fortnight: 2weeks 6days 3hours 50min 24sec
2 km is equivalent to 2,000 meters. So divide 2,000 by the students speed of 5m/sec. 2,000/5 = 400. So it takes him 400 sec, or 6 2/3min, or 6min 40sec.
The lion can reach speeds of 80 kilometers/hour (50 mph).
5 hours and 3min
3min 20sec
that depends on how much film you have
3min. 36sec.
3min 35seconds
3.75 min or 3min 45sec.
3 hours and 30 minutes
It is 300 m per min.
167 MILES. 2hrs and 3min
3min = 180s 180s + 24s = 204s
My guess would be about 3min 47 seconds