Mr. Nelson paid $3.84 sales tax. He paid a sales tax rate of 8 percent. How much was the item be was buying before sales tax was added.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

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?

If i have 20$ and i gave 5$ away how much i got