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: if ( 2 ^ 16 ) ( 25 ^ s ) = 5 ( 10 ^ m ) what is the value of m ?
Options: a. 7, b. 8, c. 15, d. 16, e. 23

Answer: d


Question: Problem: a light flashes every 30 seconds, how many times will it flash in ? of an hour ?
Options: a. 550, b. 600, c. 650, d. 700, e. 120

Answer: e


Question: Problem: in a rare coin collection, all coins are either pure gold or pure silver, and there is initially one gold coin for every 3 silver coins. with the addition of 15 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. based on this information, how many total coins are there now in this collection ( after the acquisition ) ?
Options: a. 124, b. 135, c. 146, d. 157, e. 168

Answer:
b