46. Piyush, Harmesh and Atul are partners. Each partner regularly withdrew ₹20,000 per month as given below:

Piyush withdrew in the beginning of the month

Harmesh withdrew in the middle of the month; and 

Atul withdrew at the end of the month.

interest on drawings charged for the year ended 31st March, 2025 was ₹15,600, ₹14,400 and ₹13,200 respectively.

Determine the rate of interest charged on drawings