23/60
About one hour 23 min.
There are: 1420/60 = 23 hours and 40 minutes
If you mean the fraction 23/15, divide 23 by 15. The whole part will be the whole number; the remainder will be the numerator for the fractional part.
23/100
There are 23 of them in the "23 minutes" part, and another 60 in the "one hour part". All together, that makes 83 of them.
23/10
23 275/1000 => 23 11/40
A mixed number consists of a integer along with a fractional part. For example 23/4 or two and three quarters.
8 hours
13 23/40
23/10
time = distance ÷ speed = 50 km ÷ 62 km/h = 50/62 hr = 25/31 hr ≈ 0.806 hr 1 hr = 60 min → 0.806 hr = 0.806 × 60 min ≈ 48.39 min 1 min = 60 sec → 0.39 min = 0.39 × 60 sec ≈ 23 sec Thus to cover 50 km at 62 km/h takes about 48 min 23 sec.