Rita travels 3 km in 15 minutes on her bicycle. How much time will she take in travelling 7 km?

Options

A. 35 minutes
B. 45 minutes
C. 65 minutes
D. 85 minutes

Answer

To solve the problem step by step, we will follow these instructions:

### Step-by-Step Solution:

1. **Identify the Given Information**:
- Rita travels 3 km in 15 minutes.

2. **Calculate the Time Taken for 1 km**:
- To find out how much time Rita takes to travel 1 km, we divide the total time by the distance.
\[ \text{Time for 1 km} = \frac{15 \text{ minutes}}{3 \text{ km}} = 5 \text{ minutes/km} \]

3. **Calculate the Time Taken for 7 km**:
- Now that we know Rita takes 5 minutes to travel 1 km, we can find out how long it will take her to travel 7 km by multiplying the time for 1 km by 7.
\[ \text{Time for 7 km} = 5 \text{ minutes/km} \times 7 \text{ km} = 35 \text{ minutes} \]

4. **Conclusion**:
- Therefore, Rita will take 35 minutes to travel 7 km.

### Final Answer:
Rita will take **35 minutes** to travel 7 km.

---