The weekly pocket money (in rupees) of 100 students is grouped as shown below:
Class interval (₹): 0–10 | 10–20 | 20–30 | 30–40 | 40–50 | 50–60
Frequency: 9 | n | 22 | 2n+1 | 17 | 15
Given that the total number of students is 100, find the value of n and write the completed frequencies for all classes.