20 mins + 840 seconds = which is 34 mins
51 seconds
1 minute 21 second and 42 milli second is equal to 81.42 seconds.
(60 + 42) × 60 = 6120 seconds
There are 60 seconds in one minute. Therefore, 42 minutes is equal to 42 x 60 = 2520 seconds.
7/10
To find the percentage of 42 seconds in 1 minute, we first need to convert both times to the same unit. Since there are 60 seconds in a minute, 42 seconds is 42/60 = 0.7 minutes. To calculate the percentage, we divide 0.7 by 1 (the total) and multiply by 100 to get 70%. Therefore, 42 seconds is 70% of 1 minute.
20/21 times 42 = 40
To convert 3 minutes to seconds, you multiply by 60 (3 minutes x 60 seconds/minute = 180 seconds). Then, you add the additional 42 seconds to get the total. Therefore, there are 222 seconds in 3 minutes and 42 seconds.
60 seconds = 1 minute so 2520 seconds = 2520/60 minutes = 42 minutes.
6 seconds 120 seconds or 1/20
About 1 minute 42 seconds.
1 hour = 3,600 seconds 4 hours = (4 x 3,600) = 14,400 seconds 1 minute = 60 seconds 42 minutes = (42 x 60) = 2,520 seconds Altogether: (14,400 + 2,520) = 16,920 seconds I'm guessing you probably could have done that on your own.