Correct Answer - Option 1 : 25 km
According to the given question
Given:
A covers 25% of distance on foot and 30% of remaining distance by car and remaining 45 km by bicycle
Concept used:
Unitary method
Calculation:
Let the total distance be D
∴ D = (D/4 + 3D/10 + 45)
⇒ 9D/20 = 45 km
⇒ D = 100 km
Now, A covers 25% of distance by foot
∴ Distance cover by foot = 25% of 100 km = 25 km
Hence, option (1) is correct