A gas station advertises gas at a rate of
$3.39 9/10 per gallon. How many dollars does a gallon cost?
The cost of gas at the gas station is $3.39 9/10 per gallon.
To convert the 9/10 to decimal form, we divide 9 by 10: 9/10 = 0.9
So the cost of gas is $3.39 + $0.9 = $<<3.39+0.9=4.29>>4.29 per gallon.
Therefore, a gallon of gas costs $4.29. Answer: \boxed{4.29}.
To find out how many dollars a gallon costs, we need to convert the given rate of $3.39 9/10 per gallon into a decimal.
To convert 9/10 to a decimal, we divide 9 by 10: 9 ÷ 10 = 0.9
Now, we can add the whole number and the decimal: $3 + 0.9 = $3.9
So, a gallon of gas costs $3.9.
To determine the cost of a gallon of gas at the given rate, we need to convert the mixed fraction, $3.39 9/10, into decimal form.
First, we convert the fraction 9/10 to decimal by dividing 9 by 10: 9 ÷ 10 = 0.9.
Then we add the decimal value to the whole number $3.39: $3.39 + 0.9 = $4.29.
Therefore, a gallon of gas costs $4.29.