Ryan and his mother are making new curtains for his room. They need 534 5 3 4 yards of material for each of the 2 s aller windows and 712 7 1 2 yards for each of the 2 larger windows. How much material did the two need for the 4 windows?

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?