Mia is filling her gas tank with gasoline
that costs $3.25 per gallon. if she puts
4.2 gallons of gasoline into the tank, how
much will she pay? show your work.

$13.65

Explanation:

This problem can be solved by the Rule of three, a  mathematical rule to find out an amount that is with another quantity given in the same relation as other two also known:

If:

1 gallon ----- $3.25

4.2 gallons ----- ?

Then:

This is the amount of money Mia will pay for filling the tank with 4.2 gallons

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