Identify what belongs to me

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?