What is the goal of gerrymandering?

The primary goals of gerrymandering are to maximize the effect of supporters' votes and to minimize the effect of opponents' votes. A partisan gerrymander's main purpose is to influence not only the districting statute but the entire corpus of legislative decisions enacted in its path.

Explanation:

the amount of the purse is, $120.

tax rate =9%

first find the the total tax she paid on the amount is equal to the 9% of $120 i.e,

now,

total amount paid by shalika = $120 +$10.8 = $130.8