Final answer:
The overtime rate is calculated by adding two thirds of the flat rate, which is $15, to the flat rate itself. Therefore, the overtime rate is $15 + $10 = $25 per hour.
Step-by-step explanation:
The overtime rate for a job is calculated by taking the flat rate and adding the overtime premium. In this case, the overtime is paid at a rate of time and two thirds of the normal rate, which is $15 per hour. To find the overtime rate, we calculate two thirds of the normal rate and then add it to the flat rate:
- Two thirds of $15 is (2/3) × $15 = $10.
- The overtime rate is therefore $15 (flat rate) + $10 (overtime premium) = $25 per hour.
Hence, the correct answer is D) $25.