Alex drives at an average speed that is 1/3 of the average speed that Roy's train travels. Alex takes 30 minutes to travel 35 km in her car. Roy travels for 2 hours and 15 minutes on his train. How far does Roy travel to 2 dp?

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 areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6