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.
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Question: Problem: a shopkeeper sells 500 metres of cloth for rs. 18000 at a loss of rs. 5 per metre. find his cost price for one metre of cloth ?
Options: a. 12, b. 27, c. 29, d. 50, e. 41

Answer: e


Question: Problem: at what rate percent per annum will a sum of money double in 6 years.
Options: a. 12.5 %, b. 13.5 %, c. 11.5 %, d. 14.5 %, e. 16.6 %

Answer: e


Question: Problem: dick and jane each saved $ 5,000 in 1989. in 1990 dick saved 10 percent more than in 1989, and together he and jane saved a total of $ 10,000. approximately what percent less did jane save in 1990 than in 1989 ?
Options: a. 10 %, b. 15 %, c. 20 %, d. 25 %, e. 30 %

Answer:
a