I can’t think of an answer for one of the questions on my math homework. It says “Complete the chart below to show the relationship between the two variables.”
Can someone tell me what to write in the blank spaces or at least explain to me on how to do it?

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?