Answer:
Because without the time, there's no amount of water in the water tank.
Step-by-step explanation:
For every 10 minutes, the amount of water in the water tank is the time multiplied by 5. Without the time for the water to rise, there's no water being added. So the water is dependent on the time to get it to a higher level. Sorry if this doesn't make much sense. Though I hope this helps!
