2 mins. 46 secs.
60 secs = 1 min 298 secs = 298 / 60 ~= 4.97 mins. (4 mins 58 seconds)
633 minutes and 20 seconds.
1 hour = 60 mins 1 min = 60 secs time = distance ÷ speed = 1 mile ÷ 6.5 mph = 2/13 hour = 2/13 x 60 mins = 93/13 mins = 9 mins 3/13 x 60 secs = 9 mins 1311/13 secs ≈ 9 mins 14 secs ≈ 9.25 mins
four minutes
1 min = 60 secs 900 secs = 60 secs x 15 Therefore: 900 secs =15 mins
2 mins. 46 secs.
60 secs = 1 min 298 secs = 298 / 60 ~= 4.97 mins. (4 mins 58 seconds)
56.7 mins... which is 56 mins and 40 secs
I can do it in many ways:Multiply the minutes and seconds separately, then correct for 60 secs = 1 min3 mins 45 secs x 3 = 9 mins 135 secs but 60 secs = 1 min, so 135 secs = 2 mins 15 secsSo 9 mins 135 secs = 9 mins 2 mins 15 secs = 11 mins 15 secs.⇒ 3 mins 45 secs x 3 = 11 mins 15 secsWork in seconds and convert back at the end3 mins 45 secs x 3 = 225 secs x 3 = 675 secs= 11 mins 15 secsConvert the seconds to a decimal of a minute, work it out and convert back at the end3 mins 45 secs x 3 = 3.75 mins x 3 = 11.25 mins= 11 mins 15 secsI am actually more likely to work with fractions as opposed to decimals as decimals can lead to inaccuracies3 mins 45 secs x 3 = 33/4 mins x 3 = 15/4 mins x 3= 45/4 mins= 111/4 mins= 11 mins 15 secsWork with the mins and seconds directly using sexagesimal (base 60) numbersTo avoid having to invent 50 new symbols for the numbers 10-59, I use the decimal numbers, but separate the sexagesimal "digits" by colons - like a digital clock. 3 mins 45 secs x 3 = 3:45 x 345 x 3 = 15 carry 23 x 3 + carry = 9 + 2 = 11⇒ 3:45 x 3 = 11:15⇒ 3 mins 45 secs x 3 = 11 mins 15 secs.
(7 hours * 60 mins * 60 secs) + (36 mins * 60 secs) 25,200 + 2,160 27,360
633 minutes and 20 seconds.
515433 mins 20 secs
18444secs / 60 = 307 mins 24 secs 307 mins / 60 = 5 hrs 7 mins 18444 secs = 5 hrs 7 mins 24 secs.
240 mins
1 hour = 60 mins 1 min = 60 secs time = distance ÷ speed = 1 mile ÷ 6.5 mph = 2/13 hour = 2/13 x 60 mins = 93/13 mins = 9 mins 3/13 x 60 secs = 9 mins 1311/13 secs ≈ 9 mins 14 secs ≈ 9.25 mins
22 hours 9 mins 43 secs 31 mili secs