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 certain elevator has a safe weight limit of 2,000 pounds . what is the greatest possible number of people who can safely ride on the elevator at one time with the average ( arithmetic mean ) weight of half the riders being 200 pounds and the average weight of the others being 230 pounds ?

A: 9
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Q: Problem: the ratio of money with ram and gopal is 7 : 17 and that with gopal and krishan is 7 : 17 . if ram has rs . 490 , krishan has ?

A:
rs . 2890
****