Cuda 8.0 toolkit install - nvcc not found - ubuntu 16.04

[url]16.04 - nvcc --version command says nvcc is not installed - Ask Ubuntu

I also
$sudo apt install nvidia-cuda-toolkit
$nvcc --version #it shows cuda7.5
Now I know it’s incorrect and try to uninstall cuda7.5. But
$locate #it dosen’t return any information

$ which nvcc
$ echo $PATH
$ ls /usr/local
bin cuda-8.0 etc games include lib man sbin share src

How can cuda7.5 be uninstalled?

Now cuda7.5 is easily uninstalled by apt :)