Ap-b=r but i need to solve for p

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

What properties allow transformation to be used as a problem solving tool

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?