9. Prerna borrowed ₹ 16,000 from a friend at 15% p.a. Compound interest. Find the amount, to the nearest rupees, that she needs to return at the end of 2.4 years to clear the debt.
9. Prerna borrowed ₹ 16,000 from a friend at 15% p.a. Compound interest. Find the amount, to the nearest rupees, that she needs to return at the end of 2.4 years to clear the debt.

Solution:-

Given

Prerna borrowed ₹ 16,000 from a friend at 15% p.a.

C1 = (P × r × t)/100

=(16,000\times 15\times 1)/100

= ₹ 2,400

P1 = 16,000+2,400

= ₹ 18,400

C2 = (P × r × t)/100

=(18,400\times 15\times 1)/100

= ₹ 2,760

P2 = 18,400+2,760

= ₹ 21,160

C3 = (P × r × t)/100

=(21,160\times 15\times 1)/400

= ₹ 7,935

P3 = 21,160+7,935

= ₹ 29,095