In the previous problem, how much salt will there be in tanks A and B after a long period of time?
A) 5 pounds in A, 20 pounds in B
B) 20 pounds in A, 5 pounds in B
C) 5 pounds in A, 40 pounds in B
D) 40 pounds in A, 15 pounds in B
E) none of the above

Question

Quizplus · Accepted Answer

After a long period of time, the solution in Tank A will become fully saturated with salt, so it will contain the maximum amount of salt possible, which is 40 pounds. In Tank B, the solution will have a concentration of 0.5 pounds of salt per gallon, so once it is filled up with 30 gallons, it will have a total of 15 pounds of salt. Therefore, the answer is (D) 40 pounds in A, 15 pounds in B.

In the Previous Problem, How Much Salt Will There Be