$ sudo apt-get update
$ sudo apt-get install libt1-5 

libt1-5 is installed in your system.

Make ensure the libt1-5 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libt1-5 *

You will get with libt1-5 package name, version, architecture and description in a table

libt1-5 package basic information: