Boston Heating \& Cooling installs and services commercial heating and cooling systems. Boston uses job costing to calculate the cost of its jobs. Overhead is allocated to each job based on the number of direct labor hours spent on that job. At the beginning of the current year, Boston estimated that its overhead for the coming year would be $67,200. It also anticipated using 4,200 direct labor hours for the year. In July, Boston started and completed the following two jobs: (Click the icon to view the jobs.) Boston paid a $20-per-hour wage rate to the employees who worked on these two jobs. Read the requirements. Requirement 1. What is Boston's predetermined overhead rate based on direct labor hours? Determine the formula to calculate Boston's predetermined overhead rate based on direct labor hours, then calculate the rate. ] = Predetermined overhead rate