Step 1: Understanding the Concept:
This problem requires calculating total earnings based on regular hours and overtime hours, where overtime is paid at a higher rate. We need to separate the total hours worked into these two categories.
Step 2: Key Formula or Approach:
Total Earnings = (Regular Hours \(\times\) Regular Rate) + (Overtime Hours \(\times\) Overtime Rate)
First, we need to calculate the overtime rate and the number of overtime hours.
Step 3: Detailed Explanation:
1. Identify the given information:
- Regular work day: 7.5 hours
- Regular hourly rate: \$4.50 per hour
- Overtime multiplier: 1.5 times the regular rate
- Total hours worked: 10.5 hours
2. Calculate the overtime hours:
Overtime Hours = Total Hours Worked - Regular Hours
\[ \text{Overtime Hours} = 10.5 - 7.5 = 3 \text{ hours} \]
3. Calculate the overtime rate:
Overtime Rate = Regular Rate \(\times\) 1.5
\[ \text{Overtime Rate} = \$4.50 \times 1.5 = \$6.75 \text{ per hour} \]
4. Calculate the earnings for regular hours:
Regular Earnings = Regular Hours \(\times\) Regular Rate
\[ \text{Regular Earnings} = 7.5 \times \$4.50 = \$33.75 \]
5. Calculate the earnings for overtime hours:
Overtime Earnings = Overtime Hours \(\times\) Overtime Rate
\[ \text{Overtime Earnings} = 3 \times \$6.75 = \$20.25 \]
6. Calculate the total earnings for the day:
Total Earnings = Regular Earnings + Overtime Earnings
\[ \text{Total Earnings} = \$33.75 + \$20.25 = \$54.00 \]
Step 4: Final Answer:
Lloyd earns \$54.00 for that day. This corresponds to option (D).