Arwen uses a dropper that produces drops that have a volume of 0.125 millimeter to fill a 30 millimeter test tube. how many drops does it take to fill th tube

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

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?