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A tank initally contains 10 liters of blue paint. Then red paint enters the tank at...

A tank initally contains 10 liters of blue paint. Then red paint enters the tank at a rate of 3 liters/hour while blue paint enters the tank at a rate of 2 listers/hour.

(a) How many liters of red paint are in the tank after t hours? _______ liters

(b) How many total liters of paint are in the tank after t hours? _______ liters

(c) What is the percentage of red paint in the tank after t hours? _______%

(d) How many hours until 25% of the paint in the tank is red? ________hours

Math   Calculus   
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