**(a)** Scale – 1 unit length = 10 students

**(b)** New admission every year = 10 × 10 = 100

**(c) **Number of students in year 2003 = 60 × 10 = 600

And number of students in year 2000 = 30 × 10 = 300

Yes, number of students in year 2003 are double of number of students in year 2000.