Down the drain:
Most water tanks have a drain plug so that the tank may be emptied when it's to be moved or repaired. How long it takes a certain size of tank to drain depends on the size of the plug, as shown in the table. Create a model.
| Plug Dia (in.) |
? |
½ |
¾ |
1 |
1¼ |
1½ |
2 |
| Drain Time (min.) |
140 |
80 |
35 |
20 |
13 |
10 |
5 |