A bath up could be filled by water using small pipe and big pipe. Small pipe able to flow the water 20 litre per minutes and big pipe able to flow the water 25 litre per minutes. If Bowo will fill the bath up using big pipe, then the bath up will full 1 minute faster then the smaller one. How long the bath up full if Bowo using the small pipe?
(Note:Linear Equations System)
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Mathematic Quiz 8
Answer : 17x – 60
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