Correct Option (1)
Let W represent the time taken to walk the distance one way, and D represent the time taken to drive the same distance one way.
- The problem states that a person can walk a certain distance and drive back in six hours. This translates to the equation: W + D = 6 hours.
- It is also stated that the person can walk both ways in 10 hours. This implies: W + W = 10 hours, or 2W = 10 hours.
- From the equation 2W = 10 hours, the time taken to walk one way (W) is calculated as 10 / 2 = 5 hours.
- Substitute the value of W (5 hours) into the first equation: 5 + D = 6 hours.
- Solving for D, the time taken to drive one way is D = 6 - 5 = 1 hour.
- The question asks for the total time taken to drive both ways. This is equivalent to D + D, or 2D.
- Therefore, the time taken to drive both ways is 2 * 1 hour = 2 hours.
Incorrect Options:
Options 2 (Two and a half hours), 3 (Five and a half hours), and 4 (Four hours) are incorrect. The precise calculation based on the given conditions establishes that the time required to drive both ways is 2 hours, which none of these options represent.