Problem 19 of 34geo-019
An empty rectangular trough is 8 feet long, 5 feet wide and 4 feet deep. A hose fills it at 4 cubic feet per minute. After how many minutes is the water 3 feet deep?
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Solution walkthrough1:14
- The water is a box too: same by floor as the trough, but only feet high, not .
- Volume of a box is length width height: cubic feet of water.
- The hose adds cubic feet each minute, so divide: minutes.
- Traps: fills the trough to the top, is cubic feet, not minutes, and is the full volume.