Error Ubuntu - Unable to correct problems, you have held broken packages

The following packages have unmet dependencies:
 apache2 : Depends: apache2-bin (= 2.4.7-1ubuntu4.13) but it is not going to be installed
           Recommends: ssl-cert but it is not installable
E: Unable to correct problems, you have held broken packages.

Solution

   sudo echo "deb http://archive.ubuntu.com/ubuntu trusty main universe restricted multiverse" > /etc/apt/sources.list

   sudo apt-get update