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 reduction of 25% in the price of oil enables a house wife to obtain 5kgs more for Rs.800, what is the reduced price for kg?

 Option A: 72

 Option B: 27

 Option C: 40

 Option D: 28

 Option E: 20
[A]: Option C


[Q]: Question: The profits of QRS company rose 50% from March to April, then dropped 20% from April to May, then rose 50% from May to June. What was the percent increase for the whole quarter, from March to June?

 Option A: 15%

 Option B: 32%

 Option C: 40%

 Option D: 62%

 Option E: 80%
[A]: Option E


[Q]: Question: A dog takes 5 leaps for every 6 leaps of a hare. If one leap of the dog is equal to 3 leaps of the hare, the ratio of the speed of the dog to that of the hare is :

 Option A: 1:6

 Option B: 5:6

 Option C: 6:1

 Option D: 5:1

 Option E: 9:1
[A]:
Option D