Three workers can do a job in 28 hours. how many more workers are needed to do this job in 12 hours?

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

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?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square