The speed of a giraffe is 250% of the speed of a squirrel. if a squirrel's speed is 12 miles per hour , find the speed of a giraffe.

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?