The manufacturing costs of Mocha Industries for $3$ months of the year are as follows:

Total Cost Production

April $$85,4131,210$ units

May $87,9571,690$

June $92,0382,460$

Using the high$-$low method, determine the $($a$)$ variable cost per unit and $($b$)$ the total fixed costs. Round "Cost per unit" answer to two decimal places.