Question

A tank originally contains 140 gal of fresh water. Then water containing 1/2 lb of salt per gallon is poured into the tank at a rate of 2 gal/min, and the mixture is allowed to leave at the same rate. After 10 min. the process is stopped, and fresh water is poured into the tank at a rate of 2 gal/min, with the mixture again leaving at the same rate. Find the amount of salt in the tank at the end of an additional 10 min. ns 0/10) 0/10) 0/10) 0/10) Answer Preview 10/10] n/10)

Answer 1

Let urt) be t omount Slt in he tauk dOny tome to The eke tCh ttdD de ade in1-de auk shene Ce Comcentrtion =-2U 247 140 du 70 Linesr erahio tintdler 70 t/10 The stion (D i CLE IF : CE I.Fd lers Ct)l l:4na) tio tHho t/10 Cetlto teo( Cènctia CC)co +c CAnom) C-70 S becemes 70-700t70 2.aten to lomin. it) Ci0)70 - 70e o6.661304 Noro tn dla Slt saplaced by dne M 0en. 1 (o) Y 2.c 1 -2. C CE 70 70

Now bai tial amout t6.66130 b at t0 be comes. 6.6613 C. C 6.6613. Ban writen n t/10 C6.6613 e t te1omin lt 2.0: 6066 13 e 6. 6613 eh CCHI 577M606 at lat telomin