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.

Q: Problem: last year elaine spent 20 % of her annual earnings on rent. this year she earned 35 % more than last year and she spent 30 % of her annual earnings on rent. the amount she spent on rent this year is what percent of the amount spent on rent last year ?
Options: a. 202.5, b. 194.5, c. 197.5, d. 182.5, e. 177.5

A: a
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Q: Problem: what is the normal price of an article sold at $ 72 after two successive discounts of 10 % and 20 % ?
Options: a. $ 92, b. $ 96, c. $ 100, d. $ 104, e. $ 108

A: c
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Q: Problem: in a t. v. factory, an average of 63 tvs are produced per day for the fist 25 days of the months. a few workers fellill for the next 5 daysreducing the daily avg for the month to 58 sets / day. the average production per day for day last 5 days is ?
Options: a. 35, b. 33, c. 48, d. 50, e. 52

A:
b
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