Give step-by-step solution with explanation and final answer:
Industrial Engineering in Mechanical Engineering Applied Problems

A worker completes a job in 30 minutes under standard conditions. If th

Question

Give step-by-step solution with explanation and final answer:
Industrial Engineering in Mechanical Engineering Applied Problems

A worker completes a job in 30 minutes under standard conditions. If the performance rating is 120 percent, calculate the normal time for the job.

VIPSolutions · Accepted Answer

# Step-by-Step Solution

## 1. Understanding the Problem

- **Observed Time** (Actual time taken): 30 minutes  
- **Performance Rating**: 120%

We are asked to find the **Normal Time** for the job.

---

## 2. Formula for Normal Time

The normal time is calculated as:

$$
\text{Normal Time} = \text{Observed Time} \times \left(\frac{\text{Performance Rating}}{100}\right)
$$

---

## 3. Substitute the Given Values

- Observed Time = 30 minutes  
- Performance Rating = 120%

$$
\text{Normal Time} = 30 \times \left(\frac{120}{100}\right)
$$

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## 4. Perform the Calculation

$$
\frac{120}{100} = 1.2
$$

$$
\text{Normal Time} = 30 \times 1.2 = 36 \text{ minutes}
$$

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## 5. Final Answer

**The normal time for the job is 36 minutes.**

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