A large tank is partially filled with gallons of fluid in which pounds of salt is dissolved. Brine containing pound of salt per gallon is pumped into the tank at a rate of gal/min. The well-mixed solution is then pumped out at a slower rate of gal/min. Find the number of pounds of salt in the tank after minutes. Please round the answer to the nearest hundredth.

Question

anonymous · Answer

I keep on getting 55.42, which the computer says is wrong. Here's my solution: http://dl.dropbox.com/u/17638088/mysolution.pdf

anonymous · Answer

I'm sorry, the given numbers weren't copied into the text above. Please view the pdf file i posted to correctly view the problem.