According to the compound interest, in how many years will the compound interest of Rs. 8,00,000 at the rate of 10% p.a. be Rs. 12,61,000? Find it.

Question

Accepted Answer

Flag: taking the figures exactly as given ( , , , i.e. ) does not give a whole-number year — solving gives years, not the textbook's stated answer of 3 years. With and , years instead gives , i.e. — so the printed figure of Rs. appears inconsistent with the book's own answer of years; the intended was most likely Rs. . Using years (matching the book's answer): , confirming years.