Answer:
activitity rate:
[tex]\left[\begin{array}{ccccc}$Activity&$Driver&$cost&$Total&$Rate\\$Machine Setups&setups&72,000&400&180\\$Special processing&$machine hours&200,000&5,000&40\\$General factory&$direct labor hours&816,000&24,000&34\\\end{array}\right][/tex]
sprocked unit cost: $ 38.95
hub units cost: $ 93.00
Explanation:
We divide teh cost pool over the total of the cost driver.
This give us the activitty rate.
Then we multiply each rate by the use of each product:
And divide by the total units to get the unti manufacturing overhead
[tex]\left[\begin{array}{ccc}$Activity&$Hubs&$Sprockets\\$Machine Setups&18,000&54,000\\$Special processing&200,000&0\\$General factory&272,000&54,4000\\$Total&490,000&598,000\\$Units&10,000&40,000\\$Overhead per unit&49&14.95\\\end{array}\right][/tex]
Finally we add the cost component:
Sprocked:
materials $ 18 + $ 15 x 0.40 units + $ 14.95 = 38.95
Hubs
materials $ 32 + $ 15 x 0.80 units + $ 49 = 93