You dont have javascript enabled! Please enable it! Solution: Find the amount of salt in the tank at the end of 30 minutes

# Solution: Find the amount of salt in the tank at the end of 30 minutes

#### Problem Statement:

A tank initially holds 100 gallons of salt solution in which 50 lbs of salt has been dissolved. A pipe fills the tank with brine at the rate of 3 gpm, containing 2 lbs of dissolved salt per gallon. Assuming that the mixture is kept uniform by stirring, a drain pipe draws out of the tank the mixture at 2 gpm. Find the amount of salt in the tank at the end of 30 minutes.

• A. 171.24 lbs
• B. 124.11 lbs
• C. 143.25 lbs
• D. 105.12 lbs

The amount of salt in the tank at the end of 30 minutes is 171.24 lbs

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