Task: Question Answering
Input (English): 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 40 percent of b, what is the value of m / x ?
Options: a. 2 / 5, b. 3 / 4, c. 4 / 5, d. 5 / 4, e. 3 / 5
Output (English): e