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

[Q]: Problem: a sum was put at simple interest at a certain rate for 10 years . had it been put at 5 % higher rate , it would have fetched rs . 600 more . what was the sum ?
[A]: rs . 1200


[Q]: Problem: a man whose speed is 4.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph , find his average speed for the total journey ?
[A]: 4


[Q]: Problem: the sum of the squares of 3 consecutive natural number is 2030 . what is the middle number ?
[A]:
26