Avehicle can hold 30 gallons of gasoline. consume 4.5 per 100 km, if you leave with a full tank and travel 250 km, how many gallons are needed to refill the tank?

The answer to your question is 11.25 gal

Step-by-step explanation:

Data

Capacity = 30 gal of gasoline

Consumption = 4.5 gal per 100 km

Process

1.- Calculate the gasoline used in 250 km

                    4.5 gal      100 km

                      x               250 km

                      x = (250 x 4.5) / 100

                      x = 1125 / 100

                      x = 11.25 gallons

2.- Calculate the gasoline that remain in the tank

       Gasoline in the tank = Full tank - Gasoline used

                                          = 30 gal - 11.25 gal

                                          = 18.75 gal

3.- Calculate the gallons needed to refill the tank.

     The gasoline needed to refill the tank is that same that the gasoline used during the first 250 km traveled.

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step-by-step explanation: