You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Q: Question: A father was as old as his son's present at the time of your birth. If the father's age is 44 years now, the son's age 5years back was?

 Option A: 10 years

 Option B: 12 years

 Option C: 14 years

 Option D: 16 years

 Option E: 17 years

A: Option E
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Q: Question: If 0.5 : x :: 5 : 8, then x is equal to:

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E

A: Option E
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Q: Question: The sale price of an article including the sales tax is616. The rate of sales tax is 10%. If the shopkeeper has made a profit of 12%, then the cost price of the article is :

 Option A: 500

 Option B: 515

 Option C: 550

 Option D: 600

 Option E: None of these

A:
Option A
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