February 20, 2017

Homework Help: Algebra 1

Posted by NEED HELP NOW!! on Friday, February 22, 2013 at 5:31pm.

The first of three pipes fills a tank in 12 minutes and a second pipe in 10 minutes. If both these pipes and also a third pipe are open the tank is filled in 4 min. How many minutes will the third pipe alone require to fill the tank?

My teacher told me to use a chart and an equation for this question. so any help i can get would be great. I'm sorta clueless of how to label the chart, also! thanks!

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