Recent content by pickpocket293

approximately 11.5 minutes. Thanks a LOT folks!

Ohhh, that's right! So I'd have 7*dx/x = dt then integrate each side w.r.t. the variable, then plug in 0.2 for values of x. Correct?

Bear with me here, it's been a while since I've done this... Integrate both sides with respect to X then plug in 0.2 for X and the resulting number is my time in minutes?

The pump circulates on the tank through the filter, and the filter catches all the sand. The concentration of the water at that time is pulled out, and clean (filtered) water is put back in. What I mean by "no volume change" is that in the entire system, there is no change. Sure, there is...

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Help with Tank problem-- NOT TYPICAL It's been a few years since my last experience with differential equations so this is giving me some issues... Any and all help is appreciated. Problem: A 65 gallon tank has 20 pounds (or ~1 gallon) of sand in it with 35 gallons of water (completely...