The task is to generate the correct answer for a given math problem.
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Question: Problem: the number of singles that a baseball player hit increased 10 percent from her first season to her second season , and the number of doubles that she hit in the same time period decreased by 1 percent . if the total number of singles and doubles that she hit increased 3 percent from her first season to her second season , what is the ratio of the number of singles she hit in her first season to the number of doubles she hit in her first season ?

Answer: 4 : 7


Question: Problem: if a - b = 5 and a 2 + b 2 = 31 , find the value of ab .

Answer: 3


Question: Problem: a pipe can empty 2 / 3 rd of a cistern in 12 mins . in 6 mins , what part of the cistern will be empty ?

Answer:
1 /