A water tank's graph shows it filling at 6 L/min for 5 min, then a flat 3 min (tap closed), then draining at 9 L/min until empty. If the tank started empty, how many minutes of draining are needed to empty it after the flat period?

Question

Accepted Answer

3.333. Filled = 6 x 5 = 30 L. Draining at 9 L/min: time = 30/9 = 3.33 min (about 3 min 20 s).

A water tank's graph shows it filling at 6 L/min for 5 min, then a flat 3 min (tap closed), then draining at 9 L/min until empty.
If the tank started empty, how many minutes of draining are needed to empty it after the flat period?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 8 Graphs of Real-Life Data practice

A water tank's graph shows it filling at 6 L/min for 5 min, then a flat 3 min (tap closed), then draining at 9 L/min until empty.If the tank started empty, how many minutes of draining are needed to empty it after the flat period?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 8 Graphs of Real-Life Data practice

A water tank's graph shows it filling at 6 L/min for 5 min, then a flat 3 min (tap closed), then draining at 9 L/min until empty.
If the tank started empty, how many minutes of draining are needed to empty it after the flat period?