Oriole Company has gathered the following information:

During the year, $3,000$ units were produced, $10,900$ hours were worked, and the actual manufacturing overhead was $$21,300.$ Actual

fixed overhead totalled $$10,280.$

Oriole applies overhead based on direct labour hours.

$($a$)$

Calculate the total, fixed, and variable predetermined overhead rates. $($Round calculations and final answer to $2$ decimal places, e$.$g$.$

$15\mathrm{.}25.)$