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 mixture contains alcohol and water in the ratio 4 : 3. If 5 litres of water is added to the mixture, the ratio becomes 4: 5. Find the quantity of alcohol in the given mixture

 Option A: 15 litres

 Option B: 10 litres

 Option C: 30 litres

 Option D: 22 litres

 Option E: 8 litres
[EX A]: Option B

[EX Q]: Question: Two out of five employees are capable of doing a certain task. Sixty percent of the five employees, including the two who are capable, are assigned to a project involving this task. what percentage of employees assigned to the project are not capable?

 Option A: 43.33%

 Option B: 33.33%

 Option C: 13.33%

 Option D: 38.33%

 Option E: 23.33%
[EX A]: Option B

[EX Q]: Question: What is the total number of integers between 20 and 70 that are divisible by 2?

 Option A: 19

 Option B: 25

 Option C: 24

 Option D: 26

 Option E: 20
[EX A]:
Option B