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

Q: Problem: the area of a circular field is 17.56 hectares . find the cost of fencing it at the rate of rs . 7 per metre approximately

A: 10400
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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: a can do a job in 15 days and b in 20 days . if they work on it together for 4 days , then the fraction of the work that is left is ?

A:
8 / 15
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