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

Answer: 300


Question: Problem: of 30 applicants for a job , 9 had at least 4 years ' experience , 18 had degrees , and 3 had less than 4 years ' experience and did not have a degree . how many of the applicants had at least 4 years ' experience and a degree ?

Answer: 10


Question: Problem: how long does a train 165 meters long running at the rate of 54 kmph take to cross a bridge 625 meters in length ?

Answer:
52.