SOLUTION: Write an equation of each line Justin is filling a 50 gal aquarium with water. after 5 minutes the aquarium has 3 gallons of water in it, and Justin increases the inflow rate to

Algebra ->  Linear-equations -> SOLUTION: Write an equation of each line Justin is filling a 50 gal aquarium with water. after 5 minutes the aquarium has 3 gallons of water in it, and Justin increases the inflow rate to      Log On


   

Question 1003937: Write an equation of each line
Justin is filling a 50 gal aquarium with water. after 5 minutes the aquarium has 3 gallons of water in it, and Justin increases the inflow rate to a constant rate of 4 gallons/minutes. How much water will be in the tank 8 minutes after he began filling it?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Uniform rates for volume filling, RT=V to relate rate, time, volume.
Time is in minutes and volume is in gallons.
                rate          time          volume
period_1                        5             3
period_2         4             ()             ()
Total                           8            ()


                rate          time          volume
period_1                        5             3
period_2         4             8-5=3         4*3
Total                           8            3+4*3=15

Resulting volume after the total 8 minutes was 15 gallons filled.