Quote:
Originally Posted by SGib
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Yes, I do a bit of differential equations.
The problem at hand is a bit ambiguous from the photo due to a combination of the blurry photo and not having the original statement of the word problem.
Please tell me if I have the original problem triangulated correctly. Do you have 100 gallons of salt water in some container with an original concentration of 1/4 lb of salt per gallon? Do you have fresh water flowing in at a constant, yet unspecified rate of r gal/min? Is the task at hand to compute the remaining quantity of salt at time t?
If this is the intent of the problem, you have a lot of good work and correct steps, but you should be able to write down a solution Q(t) that no longer contains Q0. In other words, you have all the information to substitute in a number for Q0. Of course, if I have interpreted the problem incorrectly, then I need some clarification on what is given and hwhat is asked for.