You promised your parents that you would wash the family car. You have not started the
Chapter 6, Problem 37(choose chapter or problem)
You promised your parents that you would wash the family car. You have not started the job and they are due home in 20 minutes. You can wash the car in 45 minutes and your sister claims she can do it in 30 minutes. If you work together, how long will it take to do the job? Will this give you enough time before your parents return?
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