Question

5. Water is flowing from Tower #1 to Tower #2 in the diagram below at a rate of 20 gallons per

minute. Initially, Tower #1 contained 1650 gallons and Tower #2 contained 570 gallons.
(a) How many gallons does each tower contain after 5
minutes? Show your work.

Answer 1

9514 1404 393

Answer:

• Tower #1: 1550 gallons
• Tower #2: 670 gallons

Explanation:

After 5 minutes, the amount of water that has flowed is ...

(20 gal/min)(5 min) = 100 gal

That amount has flowed out of Tower #1, so it now has ...

1650 -100 = 1550 . . . gallons in Tower #1

That amount has flowed into Tower #2, so it now has ...

570 +100 = 670 . . . gallons in Tower #2