Your GRE Question by GRE Question a Day



Directions: Data Interpretation - use the following figure(s) to answer the question below:

Heavy rainfall is known to erode soil from farmlands, which is one of the reasons why stabilizing crops must be planted on farmland with hills. A survey was taken of five farms, and the results are shown in the table below:

Plot Rainfall (cm) Soil Erosion (cm)
1 110 5.6
2 128 6.4
3 154 8.7
4 136 5.8
5 94 4.7

On average, how many cm of rainfall are required for 1 cm of soil erosion?


A

18

B

20

C

22

D

24

E

26



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