Give step-by-step solution with explanation and final answer:OPERATIONS MANAGEMENT
In an automobile assembly plant, the production manager is evaluating the daily productivity of three
assembly lines to determine which line contributes the most to overall production efficiency. Each assembly
line operates for 8 hours per day. However, due to maintenance and setup activities, some time is lost
before actual production begins. The manager recorded the following data for one working day.
Assembly Line Setup Time (minutes) Units Produced per Hour Defective Units per Day
Line A 40 120 30
Line B 30 110 20
Line C 50 130 35
Assuming that defective units cannot be sold, answer the following:
1. Calculate the effective production time (in hours) for each assembly line.
2. Determine the total number of units produced by each line per day.
3. Compute the number of saleable (good) units produced by each assembly line.
4. Identify which assembly line has the highest effective productivity based on saleable output.
Question:
Give step-by-step solution with explanation and final answer:OPERATIONS MANAGEMENT
In an automobile assembly plant, the production manager is evaluating the daily productivity of three
assembly lines to determine which line contributes the most to overall production efficiency. Each assembly
line operates for 8 hours per day. However, due to maintenance and setup activities, some time is lost
before actual production begins. The manager recorded the following data for one working day.
Assembly Line Setup Time (minutes) Units Produced per Hour Defective Units per Day
Line A 40 120 30
Line B 30 110 20
Line C 50 130 35
Assuming that defective units cannot be sold, answer the following:
1. Calculate the effective production time (in hours) for each assembly line.
2. Determine the total number of units produced by each line per day.
3. Compute the number of saleable (good) units produced by each assembly line.
4. Identify which assembly line has the highest effective productivity based on saleable output.
This is AI generated Response.
Asked by: chandu
Created at: 2026-03-09 15:56:38
Final Answer:
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Let's solve each part step by step using the data provided.
---
## Step 1: **Calculate the effective production time (in hours) for each assembly line.**
- **Each line operates for 8 hours per day.**
- **Setup time must be subtracted from total time.**
- **Setup time is given in minutes; convert to hours:**
\[
\text{Effective Production Time (hours)} = 8 - \frac{\text{Setup Time (minutes)}}{60}
\]
### Calculations:
#### **Line A:**
\[
\text{Effective Production Time} = 8 - \frac{40}{60} = 8 - .67 = 7.33 \text{ hours}
\]
#### **Line B:**
\[
\text{Effective Production Time} = 8 - \frac{30}{60} = 8 - .5 = 7.5 \text{ hours}
\]
#### **Line C:**
\[
\text{Effective Production Time} = 8 - \frac{50}{60} = 8 - .83 = 7.17 \text{ hours}
\]
---
## Step 2: **Determine the total number of units produced by each line per day.**
\[
\text{Total Units Produced} = \text{Effective Production Time (hours)} \times \text{Units Produced per Hour}
\]
### Calculations:
#### **Line A:**
\[
\text{Total Units Produced} = 7.33 \times 120 = 879.6 \approx 880 \text{ units}
\]
#### **Line B:**
\[
\text{Total Units Produced} = 7.5 \times 110 = 825 \text{ units}
\]
#### **Line C:**
\[
\text{Total Units Produced} = 7.17 \times 130 = 932.1 \approx 932 \text{ units}
\]
---
## Step 3: **Compute the number of saleable (good) units produced by each assembly line.**
\[
\text{Saleable Units} = \text{Total Units Produced} - \text{Defective Units per Day}
\]
### Calculations:
#### **Line A:**
\[
\text{Saleable Units} = 880 - 30 = 850
\]
#### **Line B:**
\[
\text{Saleable Units} = 825 - 20 = 805
\]
#### **Line C:**
\[
\text{Saleable Units} = 932 - 35 = 897
\]
---
## Step 4: **Identify which assembly line has the highest effective productivity based on saleable output.**
### **Summary Table:**
| Line | Saleable Units |
|--------|----------------|
| Line A | 850 |
| Line B | 805 |
| Line C | 897 |
- **Highest saleable output:** **Line C** with **897 units**
---
## **Final Answers (Summary Table)**
| Assembly Line | Effective Production Time (hours) | Total Units Produced | Defective Units | Saleable Units (Good) |
|---------------|----------------------------------|---------------------|-----------------|-----------------------|
| A | 7.33 | 880 | 30 | 850 |
| B | 7.5 | 825 | 20 | 805 |
| C | 7.17 | 932 | 35 | 897 |
### **Line C has the highest effective productivity based on saleable output.**
---
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