Final answer:
Mr. Dodd used 3.6 gallons of gas to mow his yard nine times. By dividing the total gallons by the number of times mowed (3.6 ÷ 9), it is calculated that he used 0.4 gallons of gas each time.
Step-by-step explanation:
Mr. Dodd filled his lawnmower's gas tank with 3.6 gallons of gas and mowed his yard nine times before the tank was empty. To find out how much gas he used each time, we need to divide the total amount of gas used by the number of times he mowed the yard.
Therefore, we calculate the gas used each time as follows:
- Let's consider the total amount of gas Mr. Dodd filled his tank with, which is 3.6 gallons.
- Since he mowed the yard nine times before the tank was empty, we divide the total gallons by the number of times mowed: 3.6 gallons ÷ 9 mows = 0.4 gallons per mow.
Thus, Mr. Dodd used 0.4 gallons of gas each time he mowed his yard.