There is some problem in the speedometer of Raju's car. It always indicates a value twice the actual value. One day, he drives the car to a mechanic shop for repair. The shop is 100 km from his house. It takes 5 h to reach the destination with a constant speed. What will be the reading of the speedometer?

Options

A. 20km/h
B. 40km/h
C. 250km/h
D. 500km/h

Answer

To solve the problem, we need to find the reading of Raju's car speedometer, which indicates a value twice the actual speed. Here’s how we can approach the solution step by step:

### Step-by-Step Solution:

1. **Identify the Given Information:**
- Distance to the mechanic shop = 100 km
- Time taken to reach the shop = 5 hours

2. **Calculate the Actual Speed:**
- We can use the formula for speed:
\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \]
- Plugging in the values:
\[ \text{Actual Speed} = \frac{100 \text{ km}}{5 \text{ h}} = 20 \text{ km/h} \]

3. **Determine the Speedometer Reading:**
- Since the speedometer indicates a value that is twice the actual speed, we calculate:
\[ \text{Speedometer Reading} = 2 \times \text{Actual Speed} \]
- Substituting the actual speed:
\[ \text{Speedometer Reading} = 2 \times 20 \text{ km/h} = 40 \text{ km/h} \]

4. **Final Answer:**
- The reading of the speedometer when Raju reaches the mechanic shop is **40 km/h**.