During the month of December 2021 , NWT completed 36 different jobs. Records pertaining to one such job (reference number: MT Q421-442) are as follows: The documents with the references M and L pertain to direct materials and direct labour, respectively. NWT currently allocates overhead using direct labour cost as the allocation base. For the year 2021 , it estimated $378,000 as the overhead amount and $300,000 for direct labour costs. Required: 1. Compute the overhead allocation rate for 2021. 2. Compute the total costs of the job. 3. Prepare a job cost sheet for job MT Q421-442