A sum of money becomes 7⁄5 of itself in 4 years at a certain rate of simple interest. The rate per annum is : February 3, 2020 – by admin A sum of money becomes 7⁄5 of itself in 4 years at a certain rate of simple interest. The rate per annum is : A. 9%B. 10% C. 11% D. 12%
