The ratio of sediment yield of a drainage basin to the total amount of sediment moved by sheet erosion and channel <span>erosion.</span>
The two in the hundredths place is ten times less than the two in the tenths place.
Answer:

Step-by-step explanation:
Given


Required
Ratio B(x) to A(x)
This is calculated as:

Express as fraction

Substitute:
and 

Apply law of indices


This method is called cluster sampling. I hope it will work.