How much does it cost to install and remove 1 square feet of shingle in toronto??

Is this a real; situation or a test question. We will need to know many details if its real.

It is real. Basically it is a 5/12 roof. There is chimney. Just one layer of shingles. Approximately, the size of the roof is about 30 to 4o bundles.
How much does it cost to install 1 sq. ft. and remove 1sq ft. of shingles??