That's because day 1 no longer counts against the 70 hour limit (you are only required to count the current day and the previous 7 days for 8 days total). Since the driver had -5 hours available and 10 hours fell off the calculation, the driver had a total of 5 hours available on the 70 hour limit.
How many countries are there in the world? Since South Sudan became an independent state on 9 July 2011, there are now 195 independent sovereign nations in the world (including disputed but defacto independent Taiwan), plus about 60 dependent areas, and five disputed territories, like Kosovo.
While many believe the number of languages in the world is about 6,500, according to Ethnologue, there are 7,106 living languages as of 2014. Although this number might be the latest count, there is no one clear answer as to the exact number of languages that still exist. The question of how many languages there in the world has always been surrounded by uncertainty. While we might assume that linguists have a definite idea of the exact number, as it turns out, there are many different reasons why determining a full count of world languages is so difficult.