A sum of money becomes 6 times of itself in 3 years at a certain rate

1.	A sum of money becomes 6 times of itself in 3 years at a certain rate of simple interest. The rate per annum is
Answer» Question: A sum of MONEY becomes 6 TIMES of itself in 3 years at a certain RATE of simple INTEREST. The rate per annum is ? Answer : $\sf\pink{Given}$ Sum of money becomes 6 time of itself . In 3 years . At simple interest . $\sf\pink{To\:Find}$ Find the rate of interest = ? Explanation : Let 100 be the sum of money . Therefore ,100 becomes 6 times itself that is 600 in 3 years. Now , here , 100 is principal. 600 is the amount. simple interest = ? Simple interest = amount - principal $\longrightarrow\sf{600 - 100}$ $\longrightarrow\sf\green{<klux>500</klux>}$ simple Interest = 500 Rate = SI × 100/ N × P SI is simple interest that is 500. N is number of years that is 3 . P is principal that is 100 . $\longrightarrow\sf{500×100/3×100}$ $\longrightarrow\sf{500/3}$ $\longrightarrow\sf{166.6}$