Mathematics, 10.12.2021 08:40 broooooo4991

Cheng takes 10 hours longer to pave a driveway than Sammy to do a job. Working together they can do the job in 12 hours. How long does it take each working alone?

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Cheng takes 10 hours longer to pave a driveway than Sammy to do a job. Working together they can d...