Mathematics, 16.07.2019 12:30, medellincolombia99

You and your friend wash cars to raise money for your school club. both of you can wash a certain car in 10 minutes when working together. your friend can wash the car alone in twice the time that you can wash the car alone. how many minutes do you take to wash the car alone?

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You and your friend wash cars to raise money for your school club. both of you can wash a certain ca...