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: Rs.8000 become Rs.11256 in a certain interval of time at the rate of 5% per annum of C.I. Find the time?

 Option A: 6 YEARS

 Option B: 7

 Option C: 5

 Option D: 3

 Option E: 4

A: Option B
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Q: Question: If the perimeter of a rectangular garden is 600 m, its length when its breadth is 100 m is?

 Option A: 299 m

 Option B: 777 m

 Option C: 200 m

 Option D: 167 m

 Option E: 128 m

A: Option C
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Q: Question: A cistern is filled by pipe A in 20 hours and the full cistern can be leaked out by an exhaust pipe B in 25 hours. If both the pipes are opened, in what time the cistern is full?

 Option A: 50hrs

 Option B: 60hrs

 Option C: 70hrs

 Option D: 80hrs

 Option E: 100hrs

A:
Option E
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