Give the step-by-step reasoning process and then the final answer. The rainy season is here, Jan collected 65 gallons of water in a barrel outside her home. She uses 7 gallons of water each to clean the two cars and uses 11 fewer gallons than the two cars to water the plants. Then, she uses half of the remaining gallons of water to wash the plates and clothes. How many gallons of water does Jan use to wash her plates and clothes?
She uses 7 x 2 = 14 gallons of water to clean the two cars. She uses 14 - 11 = 3 gallons of water to water the plants. The total gallons of water that she uses to clean the cars and to water the plants is 14 + 3 = 17. Jan has 65 - 17 = 48 gallons of water remaining after cleaning the cars and watering the plants. Jan uses 48 / 2 = 24 gallons of water to wash her plates and clothes.
The final answer: 24.