Financial math 1) John borrowed an amount of money from his brother, at an interest rate simple payment of 5% per month, to be paid in two installments, the first of which maturity in 30 days, it will pay off 1/3 of the borrowed capital and the second, with maturity in 60 days, it will pay off the rest of that capital. If the total of simple interest produced by this loan will be R$300.00 (Brazilian currency) then the capital paid in each of the installments is respectively from: 2) In order to obtain an effective compound interest rate of 34.488882425% by year, what simple commercial discount rate should be charged in the discounts on bonds maturing in 30 days