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George can wash the windows of his apartment in 40 minutes, and his father can wash them in 60 minutes. How long would it take them to wash the windows together? explain!!
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George can wash the windows of his apartment in 40 minutes, and his father can wash them in 60 minutes. How long would it take them to wash the windows together?

explain!!

User Felisa
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50 Minutes because it will only take half the time cause they are working together so you add the 40 minutes it takes George with the 60 Minutes it takes his dad and then you divide it by 2 and you get 50....
User ARtoo
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