A sign in a gas station advertises gas at the rate of $3.39 9/10 per gallon. How many dollars does a gallon cost, writing the price strictly as a decimal?
explain how 3.399 is the correct answer
To convert the rate of $3.39 9/10 per gallon to decimal form, we need to express the fraction 9/10 as a decimal.
To do this, we divide the numerator (9) by the denominator (10):
9 ÷ 10 = 0.9
Now, we add the whole number (3) to the decimal:
3 + 0.9 = 3.9
Therefore, the cost of a gallon of gas in decimal form is $3.399.
To convert the rate of $3.39 9/10 into a decimal, we need to eliminate the fraction 9/10.
To do this, we can first convert 9/10 into a decimal by dividing the numerator (9) by the denominator (10):
9 ÷ 10 = 0.9
Now we can add this decimal value to the whole number 3:
3 + 0.9 = 3.9
Therefore, the price of gas per gallon is $3.9 or 3.9 dollars, written as a decimal.