Brine containing 1.5 lb per gallon of salt enters a tank at the rate of 2 gal/min and the mixture well stirred leaves at 1 gal/min. The tank initially contains 100 gal of brine with 10 Ibs of dissolved salt. When will the amount of salt in the tank be 100 lbs in minutes? (Use 2 decimal places)

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.