If you have 35 and you're friend gives you 35 more then someone takes 15 then you give 10 away and you ate 19 then you're friend gives you 23 more. how much you have now?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.