# Percentage - Aptitude Questions and Answers Part 5

**20. 45% of students made it through Paper 1 while 55% students passed in Paper 2. 36% students failed in both the subjects. What percentage of students made it through both the papers?**
a. 36%

b. 42%

c. 50%

d. 55%

**21. A suitcase costs Rs 400/- more than that of a bag. 6 bags and 6 suitcases together cost Rs 4800/-. By what percentage is the price of a bag less than that of a suitcase.**
b. 50%

d. None of these

**22. A bottle was filled with alcohol. When it was half empty, it was filled with water. Again, when the bottle got half empty, it was refilled with alcohol. Again, on being half empty, it was refilled with water. Find the percentage of alcohol in the final mix.**
a. 33.5%

b. 37.5%

c. 40%

d. 50%

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