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

[EX Q]: Problem: a cycle is bought for rs . 900 and sold for rs . 1080 , find the gain percent ?
[EX A]: 20 %

[EX 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 ?
[EX A]: 4 : 7

[EX Q]: Problem: ramu bought an old car for rs . 42000 . he spent rs . 15000 on repairs and sold it for rs . 64900 . what is his profit percent ?
[EX A]:
13.8