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

[Q]: Problem: what positive number , when squared , is equal to the cube of the positive square root of 14 ?
[A]: 4

[Q]: Problem: the marks obtained by vijay and amith are in the ratio 8 : 5 and those obtained by amith and abhishek in the ratio of 3 : 2 . the marks obtained by vijay and abhishek are in the ratio of ?
[A]: 12 : 5

[Q]: Problem: the price of a book is increased from $ 300 to $ 390 . what is the % of increase in its price ?
[A]:
30 %