Teresa spends 1/3 of her day at school . she spends 1/12 of her day eating meals .what is the total part of the day that teresa spends at school and eating meals ? simplify, if necessary

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?