Ruby how to print part of the file name

I have two questions regarding Ruby.

For the below code#1, I am trying to print all the file names inside a folder, but "puts text" will gave me "/folder1/folder2/filename1.txt" for example. How can I just print just "filename1" without the directory and the .txt

number1:

 Dir.glob('/folder1/folder2/*.txt').each do |text|
 puts text

number2: i am trying to combine two array

 a = [16,5,6,8,7]
 b = [people,men,guys,boys,you]

the output will look like:

people:16, men:5, guys:6, boys:8, you:7

i converted a to string by using .to_s but i still can't combine them.