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

[Q]: Problem: find the cost of fencing around a circular field of diameter 16 m at the rate of rs . 3 a meter ?
[A]: 150.84


[Q]: 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 ?
[A]: 4 : 7


[Q]: Problem: convert 2 / 5 to a decimal
[A]:
0.4