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: out of 3 consecutive odd numbers 11 times the first number is equal to addition of thrice the third number and adding 16 to 4 times the second. what is the first number ?
Options: a. 5, b. 6, c. 7, d. 8, e. 9

A: e
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Q: Problem: a clock shows the time as 9 a. m. if the minute hand gains 7 minutes every hour, how many minutes will the clock gain by 6 p. m. ?
Options: a. 30 min, b. 35 min, c. 63 min, d. 50 min, e. 55 min

A: c
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Q: Problem: if 4 x + y = 8 and 3 x - 4 y = 5, then what is the value of 7 x - 3 y ?
Options: a. 23, b. 3, c. 15, d. 52 / 7, e. 60 / 7

A:
a
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