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?

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 =

Irene spent $33.82 on gas to fill her tank.

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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.

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