What is difference of the compound interest earn on Rs.15000 at the rate of 16% for 2 year and 3 year ? 2 साल और 3 साल के लिए 16% की दर से 15000 रुपए पर चक्रवृद्धि ब्याज का क्या अंतर है?

Compound interest for 3 years minus compound interest for 2 years gives the interest earned in year 3 only. For 16% rate, amount after 2 years = P(1.16)², after 3 years = P(1.16)³. The difference is P(1.16)³ - P(1.16)² = P(1.16)²(0.16) = 15000 × 1.3456 × 0.16 = 3200 rupees approximately. Alternatively, this is the simple interest on the amount after 2 years for one more year at 16%.