Find the simple interest on ₹6000 at 8% per annum for 3 years.

💡 SI = (P × R × T) / 100.

Find the compound interest on ₹5000 at 10% per annum for 2 years, compounded annually.

💡 Amount = P × (1 + R/100)^T. CI = Amount − P.

A sum of money doubles itself in 8 years at simple interest. What is the rate per annum?

💡 When SI = P, R × T = 100.