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

Input: Consider Input: Problem: jack and jill are marathon runners . jack can finish a marathon ( 42 km ) in 7 hours and jill can run a marathon in 4.2 hours . what is the ratio of their average running speed ? ( jack : jill )

Output: 5 / 5


Input: Consider Input: Problem: x varies inversely as square of y . given that y = 3 for x = 1 . the value of x for y = 9 will be equal to :

Output: 1 / 9


Input: Consider Input: Problem: ? % of 360 = 180


Output: 50