A man walks at the speed of 5 km/hr and runs at the speed of 10 km/hr. How much time will the man require to cover the distance of 28 km, if he covers half (first 14 km) of his journey walking and half of his journey running ?

Options

A. 8.4 hrs
B. 6 hrs
C. 5 hrs
D. 4.2 hrs

Explanation

To solve the problem, we need to calculate the time taken by the man to cover the first half of the journey (14 km) while walking and the second half (14 km) while running.

### Step-by-Step Solution:

1. **Calculate the time taken to walk the first 14 km:**
- The formula to calculate time is:
\[
\text{Time} = \frac{\text{Distance}}{\text{Speed}}
...