crash - this is how i do it. although there are different ways.
@ 25mph how far do you travel in 2hr 24 min.
2hrs is 50 miles
A 5th of an hour is 12mins so in 12 mins @ 25mph you go 5 miles as a 5th of 25 is 5.
So 12 mins x 2 is 24 mins making 10miles in 24 mins.
All added is 60 miles in 2hrs 24mins
