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Veronika [31]
3 years ago
8

An oil tanker can be emptied by the main pump in 4 hours. An auxiliary pump can empty the tanker in 7 hours. If the main pump is

started at 5 PM​, when should the auxiliary pump be started so that the tanker is emptied by 8 PM​?
Mathematics
1 answer:
Taya2010 [7]3 years ago
8 0

Answer: 1:00

Step-by-step explanation: if you start at 12:00 then you finish at 7:00 if you start at 1:00 then both finish by 8:00

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