Q: Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.
Problem: the difference between the value of a number increased by 25 % and the value of the original number decreased by 30 % is 22. what is the original number ?
Options: a. 40, b. 50, c. 65, d. 70, e. 90
A:
a