Find the value of k ,
3x+2y=2 , (2k-1)x+(k-1)y = 4k+1

Atown recently dismissed 9 employees in order to meet their new budget reductions. the town had 7 employees over 50 years of age and 15 under 50. if the dismissed employees were selected at random, what is the probability that exactly 1 employee was over 50? express your answer as a fraction or a decimal number rounded to four decimal places.