A police officer found that the distribution of cars speeds in a highway is normal with the average speed of 90 kmph and the standard deviation of 6 kmph.

Find the percentage of drivers who drive in that highway with a speed more than 108 kmph.

What percent of cars have a speed above 102 kmph?

If the minimum allowed speed is 70 kmph and the maximum is 105 kmph, What is the percentage of drivers who must receive a driving ticket due to inappropriate speed?