Sam walks 2 km in 30 minutes. How much time will he take to cover 400m?

6 minutes

Explanation:

✓Sam walks 2 km in 30 minutes.

2 km = 30 minutes. (1)

How much time will he take to cover 400m?

But 400m= 0.4km

Let the time will he take to cover

0.4 km= x(2)

Then we have

2 km = 30 minutes.

0.4km= x

Then cross multiply, we have

2km × X = (30×0.4)

X= (30×0.4)/2

X= 12/2= 6 minutes

loess contribute to the flooding of rivers by providing the silt that is washed into rivers and constantly raises the bed of the rivers. this elevation above the surrounding flood plains and dams allow the river to overwhelm the dams and flood thousand of square miles of neighboring flood plains.

answer; the region experienced a surplus of food;