Can someone show me how to de problem number 10 11 asap

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

What is the value of x in the following equation. -x ^3/2 = -27

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?