You and your brother own a house cleaning business.Â When you clean Mr. Smithâ€™s house by yourself, it takes you 10 hours.Â When you and your brother work together, you can clean the house in 4 hours.Â How long will it take your brother to clean the house by himself? Solve the problem. Show all the steps. Clearly identify (define) any variables used in the problem and and clearly show the equation as well as explain the steps.
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