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

[Q]: Problem: a train 800 m long can cross a pole in 10 sec and then find the speed of the train ?
[A]: 28


[Q]: Problem: a farmer with 1,350 acres of land had planted his fields with corn , sugar cane , and tobacco in the ratio of 5 : 2 : 2 , respectively , but he wanted to make more money , so he shifted the ratio to 2 : 3 : 4 , respectively . how many more acres of land were planted with tobacco under the new system ?
[A]: 300


[Q]: Problem: what will be the compound interest on a sum of rs . 28,000 after 3 years at the rate of 12 % p . a . ?
[A]:
s . 11337.9