Answer this question:William washes cars as a side job. He typically spends 4 minutes washing a car’s windows, 7 minutes washing the car body, 4 minutes cleaning the tires, and 9 minutes waxing the car. This morning he washed 2 normal cars and one big SUV, which took twice as long as a normal car. How many minutes did William spend washing all the vehicles?
William spends 4 + 7 + 4 + 9 = 24 minutes washing a normal car. He washed 2 normal cars, so he spent 24 * 2 = 48 minutes on the normal cars. He took twice as long as one car for the SUV, so he took 24 * 2 = 48 minutes on the SUV. Thus, William spent 48 + 48 = 96 minutes washing all the vehicles.
The answer is 96.

Answer this question:Martha spends 10 minutes turning the router off and on again, six times that long on hold with Comcast, and half as much time as she spent on hold yelling at a customer service representative. How much time did Martha spend on these activities total?
First find the total time Martha spent on hold: 10 minutes * 6 = 60 minutes. Then find the time she spent yelling: 60 minutes / 2 = 30 minutes. Then add all the amount of time to find the total time: 60 minutes + 30 minutes + 10 minutes = 100 minutes.
The answer is 100.

Answer this question:Ivy drinks 2.5 liters of water each day. How many bottles of 2-liter water should Ivy buy for her 4 days consumption?
For 4 days, Ivy consumes 2.5 x 4 = 10 liters of water. So Ivy should buy 10 / 2 = 5 bottles of 2 - liter water.
The answer is 5.

Answer this question:Rachel drinks 2 glasses of water on Sunday and 4 glasses of water on Monday. Then she drinks 3 glasses of water every day for the next 4 days. One glass of water is 10 ounces of water. If Rachel wants to drink a total of 220 ounces of water in the week (Sunday to Saturday), how many glasses of water should she drink on Saturday?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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From Sunday and Monday, Rachel drinks 2 + 4 = 6 glasses of water. From Tuesday to Friday, Rachel drinks 3 * 4 = 12 glasses of water. The total glasses of water she drinks from Sunday to Friday is 6 + 12 = 18 glasses of water. The total ounces of water she drinks from Sunday to Friday is 18 * 10 = 180 ounces. The ounces of water she should drink on Saturday is 220 - 180 = 40 ounces. The glasses of water she should drink on Saturday is 40 / 10 = 4 glasses of water.
The answer is 4.