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
To write 3.399 as a decimal, we simply drop the fraction part (9/10) and add it to the whole number part (3). Thus, the decimal representation of 3.399 is 3.39.
This means that a gallon of gas costs $3.39.
To write the price strictly as a decimal, we can simply drop the fraction part.
The price of gas advertised is $3.39 9/10 per gallon. To convert this into a decimal, we drop the fraction 9/10, which means we ignore the 9 and consider only the 3.39.
Therefore, a gallon of gas costs $3.39 as a decimal.