Simple maths - the formula is...
K = S x T x 1.6 (K=Kilometres, S=Speed & T=Time)
I'VE given you the formula - YOU do your homework !
334 kilometers per hour is 207.54 miles per hour.
100 kilometers per hour or 124 miles per hour
90 miles at 120 kilometers per hour would take 1.21 hours (1 hour 12.6 minutes).
If you are able to maintain an average of 60 miles per hour (97 kilometers per hour), driving 277 miles (446 km) will require 4.6 hours (about 4 hours and 40 minutes.) If you can only maintain an average of 35 miles per hour (about 56 kilometers per hour), then going 277 miles (446 (km) will take 7.9 hours ( abut 7 hours and 55 minutes)
55 kilometers an hour=34.1754156 miles per hour
To convert kilometers per hour to miles per hour, you need to multiply the speed in kilometers per hour by 0.621371. Therefore, 200 kilometers per hour is equivalent to approximately 124.27 miles per hour.
40 kilometers per hour = 24.85 miles per hour.
Approximately 66.4 hours
Miles per hour x 1.6093 = kilometers per hour
145 kilometers per hour is 90.1 miles per hour.
210 kilometers per hour is 130 miles per hour.
52 miles per hour = 83.7 kilometers per hour.