Question 10 [W. A.S. S.C. E. June 2006 Qn. 2b] Three friends went to a bookshop. The first bought 3
biros and 4 pencils for N30.00. The second bought 2
biros and 5 pencils for N27.00. If the third bought a
biro and a pencil only, how much did he pay?​

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?