CalcNotes0203-page27 - (Section 2.3: Limits and Infinity I)...

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(Section 2.3: Limits and Infinity I) 2.3.27 PART J: A WORD PROBLEM Example 21 (Salt water mixtures) A deep well contains 10 gallons of pure water at noon. Starting at noon, a salt-water mixture is poured into the well at the rate of 2 gallons per minute. The mixture has a salt concentration of 0.3 pounds of salt per gallon. (Assume that the salt content is well mixed with the water in the incoming mixture and in the well at all times.) a) Find an expression for Ct () , the concentration of salt in the salt-water mixture in the well t minutes after noon, where t ± 0 . Solution Let Vt be the volume (in gallons) of the salt-water mixture in
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This note was uploaded on 12/29/2011 for the course MATH 150 taught by Professor Sturst during the Fall '10 term at SUNY Stony Brook.

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