Two input pipes will be used to fill an empty 68-gallon tank.
One pipe delivers at a rate of 4 gallons in one minute and the other pipe
delivers at a rate of 1 gallon every 4 minutes.
How long will it take them to fill the tank?
Solution to the Problem:
The answer is 16 minutes.Every minute, the two pipes together deliver 4.25 gallons. They will deliver all 68 gallons in 68 / 4.25 = 16 minutes.
Correctly solved by:
| 1. James Alarie | Flint, Michigan |
| 2. Timothy Winkler | San Marcos, Texas |
| 3. Aisling Lauder | ---------- |
| 4. Sem Karaman | San Francisco, California |
| 5. Michael Reilly | Silver Spring, Maryland |