The return on these two investments over one year is $ 1,440. How much is he investing for each bet?
If the total return on two investments in one year was $ 1,350, how much was invested at each rate?
She put some of them into an account with a payment of 5% per annum. the rest to another account with payment of 8% per annum. If the total interest received at the end of the year was $ 1,390, how much was invested in each account?