The task is to generate the correct answer for a given math problem.

[Q]: Problem: how much interest will $ 10,000 earn in 9 months at an annual rate of 4 % ?
[A]: $ 300


[Q]: Problem: what will be the percentage increase in the area of the cube ' s surface if each of the cube ' s edges grows by 20 % ?
[A]: 44 %


[Q]: Problem: the area of a rectangular plot is 18 times its breadth . if the difference between the length and the breadth is 10 metres , what is its breadth ?
[A]:
8 metres