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an oil tanker can be emptied by the main pump in 5 hours. an auxiliary pump can empty the tanker in 8 hours. if the main pump started at 5 pm, when should the auxiliary pump be started so that the tanker is emptied by 9 pm?

Respuesta :

Answer:

1 pm

Step-by-step explanation:

1 + 8 = 9

cece0416
1pm is the correct answer
8+1=9

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