Required $1$:Using a plantwide overhead rate based on $7,500$ direct labor hours, compute the total product cost per unit for each product.

Required $2$:Consider the following additional information about these two products. If activity$-$based costing is used to allocate overhead cost, $($a$)$ compute overhead activity rates, $($b$)$ allocate overhead cost to Product A and Product B and compute overhead cost per unit for each, and $($c$)$ compute product cost per unit for each.

Note: Round your final answers to $2$ decimal places.