Kabir Singh walked from his house 30 metres towards the north, 40 metres towards the east, 25 metres towards the north, and then 40 metres towards the west. He stopped at this point to buy some flowers from a flower shop. Then, he again walked 30 metres towards the north. How far and in which direction is Kabir Singh's house from the flower shop?

Kabir Singh starts from his house.
He walks 30 metres north.
Then, he walks 40 metres east.
Next, he walks 25 metres north.
He then walks 40 metres west and stops at a flower shop.
After buying flowers, he walks 30 metres north and stops.

Kabir Singh's house is 55 metres to the south of the flower shop.

Thus, the correct option is (b)