Final answer:
John Porter's overtime rate is $20.18 per hour, and his total earnings for a 45-hour workweek at Motter Company, including 40 regular hours and 5 hours of overtime, amount to $638.90.
Step-by-step explanation:
John Porter worked a total of 45 hours this week (40 regular hours and a 5-hour work training session). As his work exceeded 40 hours, the additional hours are considered overtime. The overtime rate is typically 1.5 times the standard hourly rate. Therefore, Porter's overtime rate would be $13.45 × 1.5 = $20.18 per hour. Porter's total earnings for the week can be calculated by adding his earnings from the regular hours and the earnings from the overtime hours.
Regular hours earnings: 40 hours × $13.45/hour = $538.00
Overtime hours earnings: 5 hours × $20.18/hour = $100.90
Summing the earnings from both regular and overtime hours gives Porter a total earning of $538.00 + $100.90 = $638.90 for the week.