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

Q: Problem: the ratio of the radius of two circles is 1 : 3 , and then the ratio of their areas is ?

A: 1 : 9
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Q: Problem: a train passes a station platform in 36 sec and a man standing on the platform in 25 sec . if the speed of the train is 54 km / hr . what is the length of the platform ?

A: 165 
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Q: Problem: the average of runs of a cricket player of 20 innings was 32 . how many runs must he make in his next innings so as to increase his average of runs by 8 ?

A:
200
****