There are 3 times as many students participating in the hiking trip this year than last year. There are 42 students on the trip last year. Explain how to find the number of students that came on the hiking trip last year.

Atown recently dismissed 5 employees in order to meet their new budget reductions. the town had 5 employees over 50 years of age and 19 under 50. if the dismissed employees were selected at random, what is the probability that exactly 2 employees were over 50? express your answer as a fraction or a decimal number rounded to four decimal places.