Please help me with this

36 inches/second = yards/minute how many yards?

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

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?