I. Distance covered when he went to market: 125 m
Distance covered when he came back: 125 m
Total distance covered= 125m + 125m= 250m
ii. Displacement= 0m (Bcoz he came to the same point from where he started.)

Total Distance Travelled:
To find the total distance travelled, we need to consider the distance travelled while going to the market and coming back home.

Given:
Distance from house to market = 125 m

Therefore,
Total distance travelled = Distance to market + Distance back home

Total distance travelled = 125 m + 125 m = 250 m

Thus, Aryan travelled a total distance of 250 meters.

Displacement:
Displacement refers to the change in position of an object in a particular direction. It is the shortest distance between the initial and final positions, taking into account the direction.

In this case, the initial position of Aryan is his house and the final position is also his house. Since he returned back to his starting point, the displacement would be zero.

Displacement = Final position - Initial position

Displacement = 0 meters

Therefore, Aryan's displacement is zero as he returned to his starting point.

Explanation:
When Aryan went to the market, he travelled a certain distance from his house. The distance travelled is the actual path covered, regardless of the direction. In this case, he travelled a distance of 125 meters from his house to the market.

After purchasing bread, Aryan came back to his house. The distance travelled while returning is again 125 meters. Thus, the total distance travelled is the sum of the distance to the market and the distance back home, which is 125 meters + 125 meters = 250 meters.

However, displacement is a vector quantity that takes into account both magnitude and direction. Since Aryan returned back to his starting point, his displacement is zero. Displacement is calculated by finding the difference between the final position and the initial position.

Hence, the total distance travelled by Aryan is 250 meters, while his displacement is zero.