Study the following graphs and answer the following questions: 
Number of students in different branches in 5 colleges

Q1. What is the difference between the average number of civil engineers and electrical engineers?
1. 65              2. 70              3. 75              4. 82              5. None of these

Q2. In college R, number of mechanical engineers is what percent of civil engineers?
1. 33.33%              2. 37.37%              3. 43.33%              4. 16.67%              5. None of these

Q3. The number of civil engineers is what percent of the total number of mechanical engineers from all college together?
1. 149%              2. 139%              3. 159%              4. 169%              5. None of these

Q4. Find the ratio of the number of colleges in which number of electrical engineers is above average and those in which the number is below average?
1. 2:3              2. 3:2              3. 1:4              4. 4:1              5. None of these

Q5. The number of civil engineers in college S is what percent more than the number of mechanical engineers in the same college?
1. 60%              2. 62%              3. 64%              4. 65%              5. None of these