A committee is planning of reception and estimates that 30 people will attend on the day of reception 39 people attend was the percent error of the estimate your answer to the nearest whole percent

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?