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.

[EX Q]: Question: A bag is filled with pennies and nickels in the ratio of 5 to 3. There are 30 nickles in the bag, how many coins are there in that bag?

 Option A: 70

 Option B: 65

 Option C: 75

 Option D: 85

 Option E: 80
[EX A]: Option E

[EX Q]: Question: A candidate scoring 25% in an examination fails by 30 marks , while another candidate scores 50 % mark, gets 20 marks more than the minimum pass marks . Find the minimum pass marks. Find the minimum pass percentage.

 Option A: 26

 Option B: 40

 Option C: 88

 Option D: 27

 Option E: 26
[EX A]: Option B

[EX Q]: Question: If 20 men can build a wall 66 metres long in 15 days, what length of a similar can be built by 86 men in 8 days?

 Option A: 151.36 mtrs

 Option B: 378.4 mtrs

 Option C: 478.4 mtrs

 Option D: 488.4 mtrs

 Option E: 578.4 mtrs
[EX A]:
Option A