Mathematics, 14.02.2022 14:00 Arm2005

Washing his dad's car alone, Jared takes 7 hours. If his dad helps him, then it takes 2 hours. How long does it take Jared's dad to wash the car by himself?

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Washing his dad's car alone, Jared takes 7 hours. If his dad helps him, then it takes 2 hours. How...

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