instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: the ratio of a to b is 4 to 5 , where a and b are positive . if x equals a increased by 25 percent of a , and m equals b decreased by 60 percent of b , what is the value of m / x ?
answer:
2 / 5


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: the area of an isosceles trapezoid with sides of length 5 and bases of length 9 and 15 is ?
answer:

48