30% of B-A=18% OF B+A
THEN A:B?

1:4

Explanation:

30%=

18%=

Rewrite the given information:

Multiply by 100 throughout:

30(B -A)= 18(B+A)

Divide by 6 throughout,

5(B -A)= 3(B +A)

Expand

5B -5A= 3B +3A

Bring A terms to 1 side and B terms to another:

5B -3B= 5A +3A

Simplify

2B= 8A

Divide by 2 throughout:

B= 4A

Now, we have to find the ratio of A to B.

B= 4A

Divide by 4 throughout:

A =

Divide by B on both sides:

Thus, A:B= 1:4

b exhibiting favoritism toward the kikuyu people.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.