Multiple CUDA versions on machine nvcc -V confusion

I faced a similar issue after upgrading from cuda-8.0 to cuda-9.2.

Solution is to change the following in .bashrc file:

export CUDA_HOME="/usr/local/cuda-9.2"
export LD_LIBRARY_PATH="/usr/local/cuda-9.2/lib64:$LD_LIBRARY_PATH"
export PATH="/usr/local/cuda-9.2/bin:$PATH"

Solution as suggested in the comments:

export PATH=/usr/local/cuda-8.0/bin:$PATH

The problem was the ordering of $PATH, that my previous command had the =$PATH:/usr/local... instead of =/usr/local....:$PATH