Mathematics, 28.03.2021 01:10, Haleysaraya1

4. Jean and Mark are going to fill a pool with 2 different sized hoses. Jean can fill the pool in 4 hours, while Mark can complete it in 6 hours. Their supervisor thinks that the job will take 5 hours to complete if they work together. Explain each step in solving this equation, and determine if the supervisor is correct or not.

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4. Jean and Mark are going to fill a pool with 2 different sized hoses. Jean can fill the pool in 4...