ella1318
contestada

some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Irene's car had 6.1 gallons in the 15 gallon tank on the coldest day of the year. Irene filled the tank with gas that costs $3.80 per gallon. How much did she spend on gas?

Respuesta :

altavistard

To bring the amount of gas in her tank up to 1/2 full (which means 7.5 gallons), Irene would have to buy (7.5-6 .1) gallons, or 1.4 gallons.

The cost associated with doing that would be


1.4 gallons $3.80

----------------- * ------------------ = $5.32

1 1 gallon


Irene spent $5.32 to add just enough fuel to her tank so that the tank would be half full.

boffeemadrid

The amount of money spent on gas by Irene is required.

Irene spent $33.82 on gas to fill her tank.

Cost of one gallon of gas = $3.80

Amount of gas Irene bought in the tank = 6.1 gallons

Amount of gas needed to fill the tank = [tex]15-6.1=8.9\ \text{gallons}[/tex]

[tex]1\ \text{gallon of gas}=3.8\ \text{dollars}[/tex]

[tex]8.9\ \text{gallons of gas}=8.9\times 3.8=33.82\ \text{dollars}[/tex]

Irene spent $33.82 on gas to fill her tank.

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