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.
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Question: Question: Mr. Karan borrowed a certain amount at 6% per annum simple interest for 9 years. After 9 years, he returned Rs. 8010/-. Find out the amount that he borrowed.

 Option A: s. 5266

 Option B: s. 5269

 Option C: s. 5228

 Option D: s. 5201

 Option E: s. 52192

Answer: Option D


Question: Question: 0.002 x 0.008 = ?

 Option A: 1.6e-05

 Option B: 0.001

 Option C: 0.01

 Option D: 0.1

 Option E: NONE OF THESE

Answer: Option A


Question: Question: The banker's discount on $1600 at 15% per annum is the same as true discount on $1680 for the same time and at the same rate. The time is:

 Option A: 2 months

 Option B: 1 months

 Option C: 4 months

 Option D: 8 months

 Option E: 9 months

Answer:
Option C